I hope you have learned & are no longer that way.

Yes you had serious issues that needed fixed BUT if you had fixed them at thst time you would have kicked his sorry @$$ out of your life & never had anything more to do with him.

He used your lack of self confidence & it seems fear of abandonment against you & gaslighted you to do it. Those are things we are capable of fixing in our oen lives so that we aren't willing to put up with crap from others just to have them in our lives. If yiu aren't in therapy you seriously need it because you need to learn how to set YOUR boundaries & learn how to become more ibdependent emotionally so you don't get sucked into more relationships with guys like this who really don't care about you. You need to learn how to recognize red flags & not allow yourself to get involved with people like him.

Yes you have a lot of work to do for yourself so you can not get involved with creeps like him.