My pregnant girlfriend threatened to dump me if I don't quit marijuana?

She's acting crazy? That's because she's only 15 and she's pregnant with some drug addict boyfriend. You use it to escape stress? It's called lack of communication to others. You love and want to spend your life with her then do things with her. Pour your feelings and problems to her and cope it with her as real parents would. Time to grow up and act like an adult and talk things out and quit bottling things up and use drug as an excuse to escape stress if you're not willing to even make the effort to cope with it like a grown up.