We were having a conversation the other day about how one of our mutual friends had cheated on his wife and I jokingly said to my husband that if he had any complaints (in the bedroom) he should let me know and he responded with "I have a list of things!". He said he was joking at the time but I haven't stopped thinking about it since. He says he's happy with me but I get the feeling he isn't... any advice would be appreciated.