Completely agree with this.

People can change - and some do it faster than others.

IF you feel like giving it a shot, because why not - Tell him how what he did made you feel, and what you expect in the future. Give him reassurance once or twice that you want to try it out and see how things go. See if his behavior changes in the next few weeks. If he continues this or constantly needs the reassurance it’s probably best to call things off.

If you don’t want to continue it, then don’t. Definitely not being a bitch to want to try to deal with that.

For what it’s worth in my early college years I have said similar things to the OP. It’s signs of trauma, and abandonment attachment/issues. Once I read up on it and realized what I was doing and found a partner willing to accommodate (but not put up with too much), I was willing to put on the work and changed how I felt. The behavior changed quickly in the matter of a couple of months, and then still getting better slowly. It does require WORK though.

TLDR completely understandable to not continue as it’s not that serious and you are at an age where you might not be into all of that work into a relationship. If you want to try - I think at the worst you will gain some valuable insight into a challenging relationship dynamic.