My friend stopped talking to me cos of his girlfriend... help? LONG SORRY!!?

[Casey]

I've had this friend for around 3 years called James, he's my boyfriends close mate, and we used to talk quite a bit, he called me his best friend, we would hang out in groups and alone, we would go to gigs, parties etc, and I had a rough few years and he was someone I could go to.
I have never really had any feelings for this guy, he liked me around a year and a half ago but it was a stupid little thing and nothing even happened and was irrelevant and something to giggle about.
So just before christmas, there was a gig happening, and he asked me in october if I liked the band, I said yeah, he asked if he would go with him, and I said yeah, bought the tickets and he paid me for his, the gig was in early december.
After i booked them, I joked about how we best not fall out in the next few months before the gig as it would be awkward to go to the gig together. He laughed and said no, we won't.
But then in those two months, I learnt he had a new girlfriend who he hadn't told me about, I was surprised and really happy for him but confused why he didn't say. The two months continued, and we spoke back and forth, about the gig and other things, excited.
When the gig came around, we spoke about his girlfriend, he made her out to be a really 'horny' girl and was sending him messages on purpose to get his attention, meaning he was constantly texting her in line, but he said he was finally happy and I was purely happy for him.
The gig was fantastic, we got split up as you do in crowds because of pits and moshing etc... but at the end we found each other and we hugged goodbye and we went home (separate)
The next day I text him and he seemed a little weird, he said he was seeing his girlfriend all the way in retford (they met online, we live in doncaster)
A few weeks later, he spoke to me less and less, and I confided in my boyfriend (his close mate), telling him I was weirded out... my boyfriend then told me, that James told him that his girlfriend thought something was going on between me and James, and that James was forced to back off a little. I was upset that he didn't tell me himself, so I text him concerned. He said his girlfriend thought something dodgy was happening and just assumed things, and hates me when she has never met me. I told him she was being stupid, and he agreed, but he was going to talk to me less/see me less to make her happy. He then started being bitter and mean saying: 'you shouldnt get special treatment from me, sorry'. He then stopped talking to me altogether and I was upset to lose a friend, as only a few weeks before he was saying how great of a friend I was.
I direct messaged the girl on twitter very nicely explaining I have a boyfriend myself, I have been James' friend for a long time and explained Ive had a rough few years and its unfair and silly of her to assume things, and she had nothing to be worried about. She ignored me, and she tweeted such things like: 'I really don't care sweetheart :-)'. I thought this was really rude.

The thing is, if there was nothing going on, surely he would have carried on being my friend and showed his girlfriend that there really is nothing going on? Because it seems fishy to stop being my friend when she questions if theres 'something going on', as if he feels guilty.

Or because hes never really been in a 'good' and long relationship, he wants to make her happy any way and kind of gets controlled by her. Which he shouldn't let her do, because lately he does seem unhappy.

And I think its weird that just after we saw the gig, he fell out with me and ditched me, after we joked about not falling out before the gig.
What do you think?

P.s. about a month ago my boyfriend was with him in town and text me saying James' wants to be my friend again, and when I text James' asking him if it was true, he said: I will promise to make this right and I am sorry, I will let you know ASAP

A few weeks passed and nothing. He then told my boyfriend he tried talking to his girlfriend about it but she got upset and annoyed and denied it, and hasn't spoken to me since.

I am sad that I've lost a good friend, but then I think; Is he a good friend if he would do this to me?

What do you guys thing? Sorry this is soooo long!!
Do you also think that if they break up or he decides hes being stupid and wants to be my friend again, do I let him?

[Dylan]

Oh yea my friends girlfriend today wouldn't let him come near me I hate dating among friends

[Epik]

I go through this a lot. It's not him so don't worry. He has an obsessive girlfriend. One of those that don't want any female to even breath near their boyfriend. So maybe he will come around someday don't stress it too much

[Radioactive]

It sounds like he's being controlled a bit to me. I think it's clear he DOES want to be friends and he does care, but he doesn't want to upset his girlfriend. She might have threatened to break up with him if you guys still hang out or something, but I think he is a friend.

Just wait for him. If he really cares he WILL come back to do. If they do break up, I can almost guarantee he'll want to be friends again.