[...]

I don't do well with losing people. Who the fuck does, right?

[He runs a hand back through his hair; the gesture is an agitated one.]

Look, I just...

[...]

Don't you fucking dare leave me behind, got it!? If you don't remember to call I'll fucking leave you five hundred messages, and that's not a fucking exaggeration!

[This might be slightly more effective if he didn't look like he was about to cry, um.]