First of all, let me applaud you. You ARE mature. You ARE selfless. We all make stupid decisions sometimes, and this is one of yours. And that’s okay, even though this is a serious one.

I would call him, and send him a text with a picture of your ID and tell him what you just told Reddit-only with detail. My one concern with telling him in person is that he might act irrationally, I don’t know the guy obviously but it’s better to be safe than sorry.

Do you want him to stay with you? Are you graduating this year? He might still want to be with you, are you prepared for the backlash you might get from staying with him?

I would think through every option (viable) that could happen, and then find the right time to do it.