I hate my bd

I have 2 kids with the same father. Me & him have been off & on for the last 4 years. He wasn’t around for my first pregnancy & was messing around with this girl. We got together again a few months after my 1st was born. A year later, we got pregnant again & I cried because I was sad. I wasn’t ready & I wasn’t sure if he was going to be around again. Of course, we break up before my 2nd is born & now I’m dealing with 2 babies on my own while he went right back to that same girl.

I don’t even know what to think? How to feel? What to do?

Just needed to vent.