Is this guy a closet gay or just an a**hole?

I am having some issues with a ‘friend’ of ours. My partner and I have been together for nearly 5 years. About 3 years ago, an old male friend came back on the scene. He is in his late 30’s and has had one serious girlfriend (who no-one ever met by the way, it’s just him telling us about her). This ‘friend’ constantly rings all the spoken for males in the group (he is the only single one, everyone else is married, engaged or has a partner with family), getting them to go over to his house. If they say no, he keeps ringing or texting, upping the antsy by saying things like “I have a new play station game”, “I have some alcohol”, “I need your help”. Some weeks this occurs on a daily basis, often up to 6 times a day. He constantly has boys’ only afternoons and does not really talk to the females in the group on the odd occasion he does actually leave his house and goes to other peoples houses.

For his birthday a few years ago, he told all the boys not to tell the girls a thing and went out and got top less bar chicks. This birthday he has again sworn all the boys to secrecy and there is talk of a vege show. I find this confusing. He refuses to go out on dates and meet women and yet when a male of the group tells him he should, he asks them to go out with him to pick up women, claiming he doesn’t know how to talk to them! The males he asks are all married or engaged and I feel quite upset by all his self centred actions and clingy ways. He once swung around to a male friend and complained saying “But, I haven’t seen you in 3 days”. He only goes over to the members of the group who are more popular and knocks back invitations to another couples house who live 5 minutes away, instead always ringing the male part of the couple and demanding he come over. It is also confusing as to why the guys actually go over all the time. I have tried talking to my partner about this and while he actually agrees with me and understands, he still goes over and tells me “Oh, that’s just him; we all know he’s selfish and controlling”. This guy also has no respect for women at all, he doesn’t appear to like strong women, as he constantly, talks when a female is talking. Please help, I am seriously beginning to think that this guy might be a closet gay. Am I right or he is just one major a**hole?