My char has 100% affection, but i still do not know how to unlock the sex scene. Can someone help me?
Viewing post in Love & Sex : Second Base comments
depends on the character, some scenes can be unlocked purely on high Love Points (LP) which is the affection, some require Kink Points (KP)
The surefire way to get a sex scene to to get a 100% rating on a date with that character.
Otherwise, the date scenes can also be done via Booty Call from contacts but usually the girl needs a decently high KP to do it (LP in some cases) or they get mad. I would save then try booty call around 20:00 or so, if they accept, then good, if they don't then go back a save
also you can download the walkthrough from the Development log on this page, it tells you the requirements for each sex scene.