Is it my fault?

I think I've reached my breaking point.... I am so sick of not having any friends here in Arizona! I'm sick of my husbands friends treating him like crap. They do stuff together and don't even both inviting him, we see pictures on Facebook. It makes me feel like it's my fault, and I don't know what to do to make it better. I mean you can't blame me for feeling this way. Ever since I married Nate all of his friends have just left him on the doorstep. A bunch of them (one of them whom he took through the temple) all hang out together all the time and never invite him, or us. We also invite them to things and they say they're busy. I just don't know what to do or think besides the worst.