Part 1 is here.

Mrs. Wilson didn't return that night, leaving Tim in his best friend's mom's body when her husband returned. Dinner with his best friend's dad was made easier with the help of a bottle of wine. As he drank he became looser and a little more carefree. But Tim was oblivious to the amorous advances of his best friend's dad until he found himself getting kissed in the bedroom.Tim's pent-up desire for himself, combined with the alcohol and the way his new husband's kisses sent shivers down his spine, eased any worries he had. His body grew warm and wet. Tim didn't know if his best friend's dad realized how excited his was to see his naked body for the first time.Both of them were eager for Tim's body and he was soon laid out on the bed, legs spread wide as his new husband prepared to slide into him for the first time. Tim clutched his head, worry peaking through the aching need spilling through him. He reached between his legs, maybe with the intent to slow his friend's dad, but he felt the cockhead plunge in, felt his lips spread apart, heard a soft 'oh' rush from his mouth as the delicious heat of the cock slid deep inside.Tim gazed down in awe as his best friend's dad fucked him, letting his own fingers play across his sensitive clit as his cries grew to moans and, finally, to a rushing orgasm. He threw his head back and clutched at the bed as his body shook around the hot dick inside him, enjoying his new body's orgasm as his best friend's dad pumped him full of hot seed.It was only the next day, when the spell failed to change them back that Tim confessed to what he'd done, only to find that sex had sealed him in her body forever.Well, at least he would get many more nights with this body, and with his new husband.

Aliens have abducted Neil and his best friend's hot mom, swapping their bodies and experimenting to see how far they'll go in their new forms in Close Encounters, available on Body Swap Stories, Smashwords or Amazon. Preview here.
https://bodyswapfiction.com/enter/?p=11731