Why does my family do it?

Ok straght to the point the guy that I was going out with just wonts sex but I said no just wait last night I walked in on him and my sister haveing sex she did not see me but he did after all that he txt me and said "well you did not wont to have sex with me you did noy love me that what you get and you sister was mean to root" now what do I do? They go out no but hr still touchse my bum and boobs

get rid of him

thats just messed up, im sorry you have a sister like that. The guy you can expect it from, but your family are suppose to be the people you know have your back... I wouldn't even dignify that guy with any contact at all. And your sister, wow, well... Now you know you can't trust her either

well your going to have to seek some help because this has gotten to you a little! your sister needs help as well! all the men and the world and she cannot get her own man to sleep with! that is so crazy 4 real! please dont go back to him he will just do this to you again, and the next time it might be your mother! so please let go! if you need to talk let me no im here for you!

you need to leave him and tell your sister something you need to do it for yourself you got to stick up for yourself. your better then that and he most of not loved you enough to respect you of your desion. find some one who will restpect you for your choices. aye if you have any quetions message me aight...peace