Survivor,
My H still has his apartment too-- and for that matter the bimbo still lives there with her brother. H had originally told me that he would just pay half the rent for Mar and Apr til bimbo and her brother could afford to pay it on their own... but he is still paying. At first this bothered me, but then I thought, do I want him paying rent and living with me or paying rent and living with her. Hm... decided on the first one...
Okay, I have resolved myself to the fact he will keep paying on it until the lease is up. When is your H's lease up? H still has stuff at the apt, too. If your H isn't really spending time there any more, my suggestion is let it go. It is a small price to pay to have him at home and at some level working on the marriage. At least your all's income isn't being spent to support an OW! My H views the paying on the rent until the lease is up as a way to "protect" his options. We all have our ways to build escape routes, I have to allow this as my H's. Act as-if the apartment doesn't exist. That is just my 2 cents.... but granted my H hasn't committed to being home and he hasn't broken it off with bimbo (but I think the contact is lessening or else he is becoming better at going behind my back--- I'd prefer to believe the first until I have further proof).
Hang in there!! From your summary, you and your H have come a really long way. Don't let this apartment become a big issue when it really shouldn't be. (Of course, to us emotionally, it feels like a big deal!!)
Laters,
SbyS