What is it with younger people and being so immature?

live in 2 bed apartment with ex gf of 3 yrs
be best mates, broke up last year in feb
she acquires boyfriend last year in August
like the guy, thought guy likes me
last night comes home with ex gf and her mate and acts all grumpy > he drank and smoked too muchand therefore vomits.
turns out he "feels threatened by me" and hates that he feels threatened by me
wakes up late today and storms out without saying a word

now physically this guy couldn't touch me, how do I handle this? I'm thinking next time have a conversation with him, assert myself, make him sit down with me and say "as far as I'm concerned the other night you drank too much and went to bed and that's it. If you have any problems you need to talk about then that's on you to bring up but I'm not going to go chasing them. Are we good?"
He's 19 me and my ex are both 21

>>1

now physically this guy couldn't touch me, how do I handle this? I'm thinking next time have a conversation with him, assert myself, make him sit down with me and say "as far as I'm concerned the other night you drank too much and went to bed and that's it. If you have any problems you need to talk about then that's on you to bring up but I'm not going to go chasing them. Are we good?"

English?

But seriously it's not your issue or problem how he feels. Let it go.

How did you break up with a girl and still live with her? I have broke up in good terms but never been close friends after that.
Also just tell him to chill out, that if you were fucking her girlfriend you would have been doing it way before he got into her life, so why get all paranoid.

>>1
Hey man i feel him, its more that he feel's like something going on between you and her, and you cant blame him, I'm in a similar situation right now but on his side, not as bad as yours though, like as much as you want it to not bother you it still does, just explain to him nothings going on and she shouldn't act like a douche

>>1
not your job to get involved in this drama. seriously leave it the fuck alone until HE or SHE brings it up. You are not the instigator here. Personally I think she is twisting screws for whatever reason she has and I don't think it'd be a good idea to play in to it. Also I know people have their own situations but living with ur ex is generally a bad idea