Now, give him some slack.

If his wife is like my gf, she needs more sleep than him. And I guess he doesn't need to be with her when she's taking a long bath. I don't think that he was sneaking off but rather using this time to email.

If you're always 100% of the time with your wife/gf, I have very little hope for your relationship. ;-) needy needy needy :-D

Have a nice day!