Guy is talkative and funny when we're alone but ignores me and is cold infront of his wife?

He (38m) will always make sexual jokes and be very chatty with me (25f) when we're alone but as soon as his wife is around he blanks me and is cold.

Why? He doesn't even talk to me.

Guy is talkative and funny when we're alone but ignores me and is cold infront of his wife?
Post Opinion