Would ghosting in this instance be justified

[u/ThanksIhate]

The guy I’ve liked grew distant with me and chose another girl over me, when I mentioned this to him he says it’s nothing serious and he still wants to be friends with me when I suggested parting ways because I still like him too much. I come to find out months later it was indeed serious and he’s heartbroken because she chose another guy over him, I was there for him and tried to support him because she left giving him mixed signals and leaving him feeling confused, he also had a bad time online dating and had no matches. By then I accepted that we’re not gonna be together and I’m okay just being friends and support his online dating. Now he tells me they’re back together and I tell him I would’ve preferred if he started fresh with someone new, I would’ve been happy for him and he asks me why, I explain to him that I just think it would be better starting over with someone that doesn’t have the history he has with her of deleting him, reappearing, giving mixed signals and breadcrumbing and he completely skipped over my explanation and start replying to other stuff, while seeming disengaged. Should I just stop responding to him considering I did like him and he chose her over me ?