I just played the game .....did the son kiss the mother only 1 time and there is nothing else or i am missing something?
Well, you could just read tons of reviews telling you exactly the same, but I see you've decided to experience it in a weird, rough way...
So,
as most of reviews stated, there are sex scenes in this game. But it's ultimately unlikely you will encounter any. If you have weeks of free time to try all the possible outcomes (there are more than 10 iirc) reading all that unsightful crappy writing, nobody can forbid you to. People have different preferences, playing total bullshit may be one of them for some, nobody judges here. But since you've asked 100500th time those same questions...
Btw, funny enough, if you will google this game's images, there are some sex scenes in it, some are even not bad. But getting them by playing the game is truely the quest for an hero.
P.S. Why even trying this one if reviews are so negative? On this site you can get tons of much better ones you're not even aware about, including family intercourses. Whatever you seek in this kind of games, this one does not provide none of that.