This isn't all on you to manage, John needs to be the one putting up boundaries with his friends. I mean, yes, Ella is trying to mean girl you out of the relationship, but why is he allowing her to treat you like that? She literally fed him from her hand but why did he just let her? He no longer has the excuse of not knowing what she's like because she did you both the favor of showing her true colors right in front of him! I'm sure he wants to give her the benefit of the doubt but if he loves you, then he needs to be on your side. He needs to make it clear that he won't tolerate Ella treating you with anything less than simple respect.

More like fatcoon! lol

She sounds cool, I'd drop him and hang out with her on my own. New friend!

He's not really a good boyfriend if he refuses to acknowledge your breakup. Like, he knows you want to leave, but he's fine with manipulating you into staying?? He knows better than you what you want? He really is a creep.

You're not being immature at all, your dad is. You're allowed to not want someone to be part of your life. He knows you don't want to talk to him but because he wants to, he's trying to force it. Even if his talk was about his upcoming apology for childhood, which I doubt, you're still allowed to decide that you don't want it. He knows, because you don't block people you want to talk to.