I'm sorry you're feeling rejected and misunderstood by this guy. Is this person married? That might be why he was trying to keep you at a distance from the start? I've done things like this so many times while manic. Try not to be embarrassed. Since you have to see this guy all the time you'll just need to pretend it never happened. Whatever you do don't bring it up and harp on it. That will just make it worse. It will be awkward for a while but you don't need the extra stress so when you do see him do try to move on (I know, easier said than done).

Are you still living with your husband? I very much hope the bad situation you have been living with can be rectified. No one deserves any such treatment.