I can tell you what I were able to find:
Gym Scene 1a: If MC doesn't let Randy fondle Valerie or have private lesson with her, Randy watches MC and Valerie have sex in the showers in front of him as he jerks off.
Gym Scene 1b: If MC let's Randy fondle Valerie but doesn't let him have private lesson with her, MC lets Randy fuck Valerie in front of him in the showers as MC jerks off.
Gym Scene 2: After giving Valerie private lessons where she sucks Randy's dick, her and Randy go into the showers where they have sex behind MC's back as he watches in secret.
Alyssa and Valerie Scene 1: After talking to Alyssa after work, MC and Valerie go to Alyssa's home where they have threesome.
Alyssa and Valerie Scene 2a: After talking to Allyssa after work, MC and Valerie go to Alyssa's home where Valerie and Alyssa end up having threesome with her dad, ending with either a blowjob or a creampie.
Alyssa and Valerie Scene 2b: If MC choses just a blowjob in Scene 2a, MC ends up having a threesome with Alyssa and Valerie, resulting in Alyssa's dad crashing the party and fucking Valerie, ending in with a double creampie.
MC and his Family Scene 1: If MC choses to stay with his family after a dinner, he ends up getting a double blowjob from them.
MC and his Family Scene 2a: Mc and Valerie visit his Mom. Valerie and his mom have a shower together and if you chose to join them, MC ends up having a shower sex with the two of them.
MC and his Family Scene 2b: If MC choses not to join them as they shower, MC and Valerie end up having sex on the couch next to his mom who is asleep.
Valerie and MC's Dad Scene 1: Valerie can either let MC's dad spy on her as she shower or chase him away.
Valerie and MC's Dad Scene 2: Valerie can chose to enter the bathroom as MC's dad shower resulting in her stripping naked for him.
Valerie and MC's Dad Scene 3a: If MC chooses to return home to Valerie instead of staying with his family, MC can have sex with Valerie with lights off.
Valerie and MC's Dad Scene 3b: If MC tels Valerie he likes being watched as they fuck after Gym Scene 1a, you can leave the lights on in Scene 3a resulting in MC's Dad watching the two fuck while he jerks off.
Valerie and MC's Dad Scene 3c: If MC chooses to return home to Valerie instead of staying with his family, MC can tell her to go in the pool where MC's dad is swimming, resulting in a stealth swimming pool sex scene between Valeris and MC's dad and later a shower scene where MC is jerking off in the bathtub as his Dad and Valerie shower together.
Valerie and MC's Dad Scene 4: If MC chooses to stay with his family, leaving Valerie home alone with MC's Dad, Valerie ends up having sex with MC's Dad by the pool.