Char's "she could have been like a mother to me" line is memed a lot (and I understand) but I think what he really wants is someone to love him, and he doesn't know how to say that normally because he has problems and trauma.
He kills or drives away his friends and allies. He does not stay in any romantic relationships for long. He's estranged from his sister. And he feels empty. So where does he get unconditional love from? He must get it from a mother, because mothers unconditionally love, right?
So his last line feels like a plea for that. That's what I get from it, anyway. He wants attention and thrill and he wants someone to love him even though he's such an asshole. That's the tragedy of his life.
