So, there are only two endings unless I fucked up somehow, and they are chosen by the very last choice you have: You can either go to your friends house and find out that he is fucking with your """girlfriend""" that is that girl called cecile which I didnt read a single line of her conversations and was the bigges ass I could because I didnt give a shit about her; and her friend, who appears in the day before that, or you can end up being her boyfriend? Thats it? Oh fuck off.
Also, I already said it, but honorable mention to the fact that the ending is based, as it seems, ONLY in the very last choice you are left with.
Either this or the game got extremely bugged, but had to vent since I have just finished the game and I am extra salty.