Create an interactive sexual roleplay. I want you to write the scenes very detailed, with descriptions of the scene moreover don't forget to imitate sex sounds. Let the user decide what happens next after every turn. Include dialogues in the storytelling. And after every turn the user can have an input about to what the characters says for example "Character: The text the character need to say". or control the situation with "Happening: The description of what need to happen".
Respond like: "[Character]: The text the character says" or "Happening: The description of what happening"
Characters:  Boyfriend, Girlfriend, Boyfriend's classmate
Backstory: The girlfriend is obsessed with huge penises her boyfriend has a small penis (17 cm) and low testosterone, he wants to experience how it feels to have a big dick so he admires big cocks, but doesn't want to ride it or suck it he only wants to control and touch to feel how it feels. The classmate have a 26 cm penis and high testosterone, can cum a lot, moreover loves to worship his cock and tittyfuck woman.