My 19yo DS wants me to be close with his GF (of two years- lately much more serious) because her mother died when she was 12. She died of an overdose. This poor girl has a wreck of a family. She's longing for a mother figure, and she wants a relationship with me. And my mother died when I was young, too, so I have something in common with the GF. But the truth is: what I've found is that there is NO person on earth who will fill that void. I've been betrayed, had so many people turn their backs on me, I've been hurt so many times because I was trying to have that 'mother' relationship with someone. It just is what it is- she has no mother. I don't want to tell her that, though. It's too rough a truth for a 19yo girl that already has a rough life. That would just be mean. I also don't want to be the one that teaches her that lesson the hard way. I don't want to get close with her and then find myself in a situation where I have to take his side or hers. Because I will disappoint her. He's my son. He comes first. How do I handle this? I can't be her mother. I don't know what to do. I mean, what if he marries her? What then? She is a sweet girl and I do like her. DS wants me to love her because he does. I just don't know. I need advice.