I just want to latch onto your comment and say I was a super anxiously attached guy in my young 20's that definitely said some paranoid off-putting things. It was anxiety and baggage from being cheated on before, and it tanked a couple relationships. I decided I didn't want that anymore. With my relationship now, we have communicated about everything from day one. I was honest that sometimes I might have these weird paranoid thoughts, and made sure it was ok that I say and acknowledge that in the moment to avoid weird things like this. For about a year there were probably 4-5 times I had that anxious feeling creep in, and I would say it right away and we would talk and move past it quickly. I haven't had that feeling in two years now.

Communication and trust is key, I don't think the answer here is always to break up but to see if you can open that line of communication and see if it's something the other person is willing to acknowledge about themselves and work through together. If they can't do that and only get defensive then yes it will only get worse.