Dealing with Abandonment Fear in Relationships

I feel so silly trying to rationalize my way through my fear of abandonment bc like. I’ve done the work of recognizing that I’m going to be abandoned/left/rejected, and it’s not even my poor self image saying that. Like that is literally just a human reality, that all relationships end. Either it dissolves or one of you hits the dust and the other is left behind. Like that’s literally just grief. So I had to reframe it from “they’re not going to leave me” to “how am I gonna fix it if they do?” But like. Knowing this does not make me feel much better omg like I have a better road map but every other thought is “what if they decide they hate me I will literally disintegrate like a pillar of salt”. This disorder is ass bro I just want this girl I like to be my girlfriend