You may not be up to addressing this tonight...but it DOES need to be addressed. I know this may not be your way of doing things...but for me, this would be one of those situations where I would ask my H, would you rather share this info with me....or lose me?
Here is a list of the "signs of cheating" off of the website I recommended.
Secretive phone calls Unreachable by phone Unexplained numbers on phone bill If you call their cell phone and get the call waiting beep...they say they weren't using the phone. Never leaves the house without their cell phone/pager Hang up calls or someone always saying they've got the wrong number when you answer Hiding cell phone or pager Strange numbers on pager ( could be codes) Hiding cell phone/home phone bills/credit card statements Phone bills changed from detailed to normal Acting different( short tempered, distant, defensive, etc.) Neglecting chores at home Picking fights over trivial things in order to get you to leave the house, or so they can leave the house Accusing YOU of cheating Withdrawing from you/family/friends Pointing out YOUR flaws Telling you that you'll talk about your relationship concerns when it's more "convenient" Little input into future plans with you Telling you your concerns about the relationship are "all in your head" Avoid any conversation with you other than basics ( "when's dinner", etc.) The " I love you, but I’m not IN love with you " talk New interest in exercise/diet More time at the gym Sleeping ALOT New cologne/perfume New wardrobe Suddenly carrying breath fresheners( gum, mints, etc.) with them constantly New password protection on computer Secret e-mail accounts Up on computer to all hours Closing dialogue windows on the computer when you walk into the room Erasing computer history after every use Unexplained purchases on credit card ATM withdrawals at unusual locations Extra mileage on the car Errands that should take 1/2 hour take much longer Claims to do things they've never done before ( shop, etc.) Buying expensive flowers or gifts for no reason ( if they've not done that before) Getting a detailed daily itinerary from you so you won't cross paths Leaves early for work or comes home late more Claims to work overtime, yet no overtime on checks Mentioning a "friend" but never introducing you Too many visits to "friends" The he's/she's just a friend story Lying about where they've been or whom they are with Coming home late saying they " just lost track of time" Regular friends to both of you acting weird or embarrassed around you Offers to go to the store when they usually wouldn't Sends you to the store when they could easily go themselves Unknown cigarette butts in ashtrays Passenger seat position changes Changes in sexual behavior with you (may be more or less frequency) or different techniques Hiding Viagra Hiding condoms
As you can see...phones are at the top of the list.