One of the things I'm seeing similar is that when H is expecting or on the way to see OW, he's angry, angry, angry. Swearing, just not himself at all, and on the way back, he's alternating between anger and silence, but while with her, it's all "yes, baby, you're so smart, you make me SO happy."
It's the high and the expectation of it, and when it's over, he's still empty. I clearly see it now... I'm glad I gathered the intel I did and I'm glad that I decided not to pursue it any longer, as it will do me no good to get dragged down into his addiction.
