Heather I'm going to respond better after I've had some time to think.
Sorry for the Detour.

Back to your situation.

The bed thing???? I still don't get it all. I was thinking if that was me (not wanting you in bed) what would I get out of you sleeping in another room???

Two things:
1. Avoiding the thought of OM kissing you, but you guys have sex. Strange.
2. He is so into porn or so hurt about what has gone wrong with the M, he (jacks-0ff, the term I like to use) masturbates and wants to do that solo. He is too up tight/insecure to allow you to be there when and if he does it.
3. Control/pay-back of some type.
4. I am way off and have no clue

Oops, I said 2 things but listed 4 things.

Lou