Nara, I'm so sorry you are hurting. Your dreams have been crushed and it's normal to grieve over that loss.
SOMEDAY....you will be able to look back and see how fortunate you were to get off of this CRAZY-TRAIN before it de-railed. And it WILL de-rail.
His Mom sounds like a classic manipulator (or maybe she's just a freaky, hateful person, not your problem now) and he's very obviously an Alcoholic with some weird Mom issues.
Run away FAST from these unhealthy people and don't look back.
Praying for you to have the strength to get out of this nightmare.