Firstly dude. My first ex convinced me that it was just a friend that she was texting 24/7. I took her word but my gut was screaming at me something was wrong.

It was a nightmare. Her calling me paranoid yet texting this guy allllll the time that very obviously liked her back. (And he asked her out multiple times I found out after).

It made me feel insane.

I was not. Everything I feared happened did. When I should have just had some goddamn self respect and left her for disrespecting, gaslighting, and lying to me.

So yeah. Agree to the breakup and move on dude. It sounds dodgy but even more important than that, you don't sound like you quite have the self worth to be in a stable relationship. You need to be by yourself for a while. You need to be the number one in your own life and be confident in who you are.

Best of luck OP!