G.♣.
My husband and I have been married for 10 years, and since the first day he introduced me to his family he views time with his family as time to hang out with his family. (Drives me crazy.) His focus is on his family. Even if I'm standing right next to him, he has this amazing power to tune me out ... even more so than normal selective hearing. It's bizarre and amazing at the same time!
We've had a few discussions (arguments) about this, as I do not appreciate being tuned out, at all, ever! But I am working on not getting too upset about it.
Honestly, I think he doesn't mean anything by it. He just thinks about how he sees me every day and only sees his family on occasion. So they are the ones he's interested in spending time with.
Since this is something that is upsetting you, you have to talk to him about it and really spell it out. Be very specific about what is bothering you. If you haven't done that before, he's probably going to be completely caught off guard. Try not to be offended if he doesn't get it. It's important for you to talk about it, but you also need to listen. If he says, "That's crazy! I was just being polite," you have to try and accept that. None of the things you mentioned would in any way cause my mind to jump to cheating (at all). If they bother you, it's ok to ask him to be more sensitive. But it's a huge leap to "He's cheating on me."