Best friend issue

[DarkNick]

First of all hello!
I wanna do a small prologue before cutting in to the chase so I can be a bit more specific about the situation.
So 6 years ago I met the friends that have always been on my side (well most of the time but anyway,shit happen).We are 3 girls and 3 boys.
2 years ago one of the boys went to another school and so during winters we can't be as close as we used to 'cause of studying and stuff...
So that leaves 5 of us hanging around at school and out of it most of the occasions...
Lately my other guy friend is acting a bit strange... To be honest I've never been the warm kind of guy (except when I'm in party mood :P ) so sometimes I can be a bit ironiccal and a straight talker but it's not an issue most of the time 'cause we've all learnt each others characters and especially with that friend of mine we have our own unique friend code communication.
Some weeks now he is closer to another group of boys and he has, well somehow left me out completely of his life...He sits with one of them most of the time during classes, hangs out with them etc. He's still talking to the other friends of mine (not as much as he used to though) but with me really rarely and occasionaly.
I asked him 1 week ago if there's something wrong but he was like what the f*ck are you talking about m8?We're ok and stuff.... but he's still acting the same.
He also really avoids inviting me when he and the other mates are hanging out.Once, one of them (of these mates) invited me but I said no 'cause I was afraid that I would 'cause some kind of conflict between my friend and I.
I feel a bit strange about it and that's why I've somehow stopped talking to him as i used to as well... It really bothers me 'cause we never really had argued for real until now. I don't know how to handle it and well...it hurts... I'm also thinking that he may is acting weird cause of some ppl bullied me in the school sometime ago 'cause I have female friends... -.-'

Any ideas??
(Sorry for my bad english, haven't talked for a long time in english and it's not my first language!)

[DerBear]

Honestly its hard to say. It could be multiple reasons.

The first could be simple, He has moved on/your friendship has grown apart. I know many people grow apart really easy even if they are the best of friends.

Your friend could have also found new friends and ditched his old ones I mean you say he still (rarely/not as often) hangs out with your other friends so maybe its just he has found new friends and that he has forgoten about his old friends. Which is sad but it does happen.

It could also be the fact that he has had something happen in his personal life which has had a knock on effect of his current friendships with people.

The one thing that makes me think it doesn't have much to do with you, is when you asked him if anything is wrong and he told you that nothing was wrong. This gives me the idea it really is nothing to do with you and that maybe its just he has moved on and half forgotten you.

Again these are only possibilities so I am not 100% sure as it could be multiple things.

My advice would be to maybe invite him to do something with you and him, just you and him and hang out again and get talking more often. Then maybe ask him as a supportive friend if anything is wrong with you and his friendship and if anything is wrong in his personal life. I know you've already asked him if their is anything wrong with you and his friendship but asking again wouldn't hurt.

Anyway, hope this helps.
Best of luck