I fucking can’t

I’ve been dating or going out with or whatever this guy for a year and a half. He’s insecure and confused and he refuses to commit but I’ve stuck around because he was nice and I loved him. My friend just told me he asked someone to prom but got rejected and I’m fucking livid.

I’m livid. I could beat him

So I’m gonna talk to him about it, because I’m fucking pissed. But what do I say? I need to know what the fuck is going on and if what she said is true then I’m leaving and im done. I want to ask him about that, I want to ask him why he’s so weird with me, I want to ask him why he won’t commit and I want to know where the fuck we’re going. I’m just afraid I’ll stumble over my words, how do I do it?