Is this what it should feel like?

I was with him for a few years. We broke up. The sex just wasn’t right, he wasn’t there for me like I needed him to be and I was always treated as a second option, or third, or fourth..

I travelled abroad with work. I realised I missed him. Was it just the company - did I feel lonely? Or was it more? I still don’t know.

Fast forward and I returned home and we got back together. We’ve been together for a month or so and I found tinder on his phone. How am I meant to react? I’ve said it’s okay and he deleted the app.

Should I have broken up with him then and there? Part of me is so angry and outraged, and another part just expects the bad things now. 

Is this what it should feel like?!
Sincerely,
Miss absolutely clueless