Help Me Out?

Hey everyone,

So.. I started talking to someone new after coming out of a toxic relationship a couple years ago. I needed a long break from relationships and I feel like this is the right time to get back out there. So whenever I’m texting this guy, I get very paranoid if he doesn’t text back quickly or if he doesn’t text me for a few hours. My mind will automatically think ‘he’s texting another girl’. I never think of any other possibilities; that’s just the first thing that comes to mind. How do I stop thinking like this?