Am I wrong for this?

I was with my sons father for 2 1/2 years and he hasn’t been around for 6 months. We talked almost everyday through text, skype, etc.. but he’s a total dick to me and ignores me half the time, doesn’t really ask about our son, my grandma is on life support and yesterday we had to make a decision what to Do with her (she’s still alive thank god 🙏🏻) and when I was upset yesterday he was texting me asking if he’s single, can talk to other people, told me he was busy when I needed him. So today I basically told him I can’t deal with this anymore and I was blocking him so I wasn’t tempted. All he said was ok. I downloaded a dating app... I need to find someone to talk to and get my mind off of him. I feel so wrong though. And no, we didn’t JUST break up today. We haven’t even technically been together for the past 6 months, just keeping in touch. Am I wrong? Tell me I’m not a bitch.