Kudos to your friend for standing up for herself!
And if she has the slightest twinge of guilt, remind her that he's essentially saying this:
"You should be in a relationship with me because I'll be sad at you as hard as I can if you don't. Also, we're both flawed and damaged people, so we're perfect for each other. Also, you're so unlovable that I am the ONLY man for you.
What, you aren't overwhelmed by my charm yet? OK, here's a data dump with all my self pity and a lifetime's worth of my romantic notions, none of which I've bothered to notice you don't share, all vomited out for your approval.. You've GOT to want me now, right? RIGHT?"