Why does he think he's funny?

[Samantha]

So this is Kate, I don't have an account so I'm using Sam's account.

So my ex and I are friends. We hang out and talk a good amount. We're still close

But my name in his phone is "#notwithit"... WHAT DOES THAT EVEN MEAN??

I called him out on it and he said it was a complete joke and it's not bad... But I don't get it? Am I getting hurt over nothing?

How do I stop being so uptight and not care? When he jokes around, he uses hashtags which is kind of annoying

(He's super nice to me. We always do stuff together, like dinner or massage or the mall, and we take turns paying for each other). I believe a lot of the reason was my fault for the break up, even though he's the one that ended to relationship after almost 2 years back in March.

We didn't really talk for a couple of months after the break up, but once I got home from college, we talked a lot more.