Wanting my wife in a threesome

The wife and I used to go to swinger clubs when we were first dating. I liked seeing her being pleasured and enjoying sex. Since having kids, she has lost alot of desire for sex. I, on the other hand still desire sex and fantasize about her having sex.
She recently went to work for a ride share company in the large metropolitan city we live in. It was only temporary between her real job in doctors offices( whole different set of fantasies there). So, I would imagine her coming home and telling me she thought this one younger gentleman was very nice and cute. She said he seemed to be liking what he saw and was trying to flirt a little. I told her, next time you happen to pick him up to take home from doctor, try flirting back. So the next time she drove, she decided to wear a skirt and a more revealing top. Now, my wife isn’t skinny, but not fat either. She is curvy and her cleavage is yummy to see. Well after a few older folks needed a ride, she finally got the call for him to be picked up and it instantly aroused her. She instantly made her panties moist, so she just pulled over and removed them and stuffed them in the console. Her top was button up, so she just undid 1 more button, revealing more of her yummy breast in her shelf bra with no material covering her nipples. When she pulled up, he got a large smile on his face when he recognized her. He went to get in the back seat and she said he could sit up front if he wanted to. She made an excuse and said that the old folks made it smell weird. Once he sat down and buckled up, he noticed how sexy she was looking and commented to her ” wow, you look good, you got a date with your husband after dropping me off?” She just smiled and laughed and said “no, he is working for many more hours, and I just threw some clothes on to say cool in the heat”. They started towards his place that was a good distance from the doctors office. She happened to notice him adjusting himself a few times and smiled at him. He caught her smiling and smiled back at her. She asked if he is feeling better after the dr visit, and he said he felt 100% again , but Dr still wouldn’t clear him to go back to work. While he was talking, she acted like her inner thigh was itching and slowly scratched it raising her skirt up higher and higher. At that point, she saw him adjust the growing bulge in his shorts. She stopped scratching and acted like she was adjusting her mirror then dropped her hand down and rested it on his thigh. He twitched slightly and she said” you ever get an itch right in this area?”as her fingers rubbed on his thigh. He placed his hand on her thigh and slid it higher up her skirt and said ” my itch is usually higher up”. She smiled and grabbed his hand and said” those are the best itches to scratch”. She kept her hand on his as he kept caressing her thigh, slowing moving up to the top of her soft thigh. She let go of his hand and placed hers back on his bulge just as his little finger brushed against her soaked pussy lips. She said ” ooops, guess I forgot to throw panties on”. She then said “we are closer to our place, wanna stop there or go to your place?” She informed him I was gone, but if I was home,I would be OK with him coming in. She told him we used to swing many years ago. When they went inside, he excused himself to the bathroom and she quickly shot me a text ” your threesome fantasy will be reality if you can get home soon”. While he was in bathroom, she tidied up a little and undid another button on her shirt. When he walked out of the bathroom, she walked up to him allowing him to look down at her more exposed breasts. She put her arms around his neck and said ” I have to confess, I was thinking about you when I put these clothes on, hoping to pick you up again”. He put his hands on her hips and pulled her close and said ” I was hoping you would give me a ride!!” She felt his large, stiff cock press against her pelvis and just pulled his head down and kissed him hard. She walked him over to the couch and sat him down and pulled her skirt up and sat on his lap. She straddled his muscular legs and pressed her bare pussy down on his bulge in his shorts and pressed her mostly uncovered breasts in his face. He undid the last 2 buttons and threw her shirt off and started licking on her erect nipples. His hands were caressing her yummy ass cheeks and grabbing handfuls forcing her to grind harder against his cock inprissoned in his shorts. She took a free hand and reached down and undid his button and struggled to unzip the shorts. To her enjoyment, he wasn’t wearing anything underneath either. ” I was thinking about you also when I threw my clothes on”. She leaned down and shoved her tongue down his throat as she was now rubbing her swollen soaked clit against his swollen cockhead. He grabbed hear breasts and broke their kiss as he started sucking hard on her nipples. She reached down and grabbed ahold of his cock and rubbed it feverishly against her clit making her moan loudly. She leaned hard against his face forcing him back into the couch as she raised up slightly and proceeded to guide the tip of his cock into her pussy. Once she liked where it was, she dropped down hard on him causing them both to moan in agreement. She quickly found a good rhythm and was riding up and down on him in pure pleasure. After a few minutes of total enjoyment, there was a noise at the back door. She felt him nervously tense up fearing he would be busted for fucking her. She sensed his nervousness and slowed down and ground down on him taking every inch she could. ” it is OK, I told him to get home and join us while you was in the bathroom”. She saw the smile return to his face as he once again started to taste her nipples. I walked in and was pleased she found an attractive younger man to help her feel sexy again. I started removing my shirt as I approached them. She smiled at me and motioned for me to come close as she away a passionate kiss from me. While kissing, she reached up and undid my pants,all the while riding slowly up and down his shaft. She tugged gently allowing my pants to drop to the floor. She took ahold of my already rock hard cock and stroked it a few times. She broke the kiss and placed her warm,wet mouth on the tip and started licking my precum off. I looked over at him and saw him getting more excited at being involved in what I am guessing was his first threesome. She started sucking on me for a few minutes before abruptly stopping. She jumped off of his cock and said she needed us in a different position. She had me sit on the arm of the big couch and turned to her new younger sex toy and said” my favorite position of all is when I am getting fucked from behind “. She bent over and started stroking and sucking on me as she presented her nice plump ass to him. He grabbed his soaked cock and started rubbing it all up and down her swollen pussy lips. She spread her legs farther apart and he spread her lips open and slammed his cock balls deep in her pussy. She screamed out in pure ecstasy as she almost choked on my average sized cock. She is usually not too voiceterous but she looked up at me and said ” his cock feels so fucking good pounding me”. That was the first words she had spoken directly to me since I walked in. I told her more than once in the past that she is still sexy at her size and needed to enjoy some new cock again. She was having trouble concentrating on both cocks at once, so I pulled my cock out of her mouth and made her stroke it. Now that she could give full attention to his cock, she started fucking him back by meeting his thrust forward with her thrusts backwards. She had let go of my cock to steady herself and keep fucking. I grabbed my cock and started stroking it close to her face. She got a large smile on her face knowing how much I was enjoying watching her getting sexually pleasured. Again she was talking dirty to him ” your fucking cock is gonna make me cum”. This caused him to increase his pace and now the roomed was filled with sounds of their moans and his body smacking hard against her ass. It only took a few minutes and her body started convulsing. He felt her starting to orgasm and blew his load deep inside her dripping pussy. This sent me over the edge and I was able to shoot my cum on her breasts hanging near my cock. He finally stopped cumming in her and pulled out. She grabbed a towel that was close by and wiped off her breasts and grabbed his semi-erect cock and cleaned him off. They both hastily grab their clothes and got dressed. She said ” I still need to get him home, but maybe you can fuck me more when I get back”. And just like that, they were out the door.