Astolfo--yours is an oft-told story. Of course he is behaving just like an alcoholic and doing the things that an alcoholic does. "Leveling" you to make himself better (comments about atleticism and age); blame shifting (weddding vows comments).
I dare to say that he is hitting the things that you believe about yourself to be true--perhaps the lies that the tapes from your past play in your head. Like: You are not good enough; you are not attractive enough; you don't deserve to be loved by someone great. You know--the kinds of messages that many of us receive that undermine our essential worth--and we repeat them to ourselves until we actually believe these lies. My guess is that he knows exactly where every vulnerability of yours lies! An alcoholic will use this knowledge against us to sooth their own feelings of guilt, inadequacies and shame.
While he may be inadequate and immature and insensitive--very far from self-actualization (lol)----this feeling is really--at rock bottom--more about you and how you secretly feel about yourself than about him.
Remember that his recent dive into lusty oblivion will be short lived. The sparkly will wear off in short order--as soon as the bonding hormones taper off.
You, however, are building a strong foundation for yourself. The best--and only realy revenge is to live well.
Promise yourself to live well!!
dandylion