I am recently involved in the longest relationship I have been in before. This is the most serious one I have been in and I have not had luck with them in the past but I am experiencing extreme anxiety from it.

I love my boyfriend so much, I care so deeply about him but I keep having this huge anxiety about him never texting me back again. When we are together I feel completely fine but occasionally do wonder if he does not love me anymore.
I have asked him before if he would ever ghost me and he says no that he would never not communicate with me again without any breakup.

But I am still terrified of it I get so anxious about him not texting me back at least once a day and I just want it to stop, it is driving me insane. but i feel like If i do not worry about it it will happen to me.

I have no idea where this anxiety stems from seeing as though I was never abandoned as a child I know it could possibly come from extreme low self esteem problems but I just really really want some good advice on how to stop feeling this way and if anyone else experiences the same thing. I have anxiety about a few other things in the relationship as well but I wanted to talk about what affected me the most and on a daily basis.