I want to be friends with my ex but it’s still hard. Is this normal & is there anything I can do?

Hi guys, my boyfriend and I broke up several months ago. I was invited back to our friend group we had, and I really do want to be friends & hang with them, so I’m trying to be positive & trying really hard. It’s still getting to be kind of hard tho, bc he talks about new girls he’s dating a lot. He assumes we’re 100% cool/friends and I really want to be! I can just feel myself sort of jealous when he talks to a bunch of other girls in front of me. It’s just kind of hard/painful/awkward to watch…

Is this a normal feeling to have? It’s only been 4 months since the breakup. He has totally moved on. How can I fight these feelings & get over him/see him just as a friend? Maybe I should leave the friend group or just need more time? I don’t want beef with him.
I want to be friends with my ex but it’s still hard. Is this normal & is there anything I can do?
Post Opinion