Lets see here

a. Your H is still having an affair with the OW controlling your building - you will run into him and you will know why he's there.. And it won't be to see you
b. OW can make your life difficult with all the pressure a land lord can toss at a tennant, which is considerable
c. Your H can even get keys to your apt through OW if he wants to enter at any time

Want me to continue?

Am I the only one who thinks this is a bad idea?