I agree that this doesn't sound like a good situation. It sounds like she is kind of toying with you. She pressured you for sex and then when you voiced your concerns about it affecting your friendship she dumped you. And saying she wants to kidnap you and asking you to marry her without even dating just sounds like she is playing around with your emotions a little bit. If I were in your situation, I would just stay friends. You do not want to try and get involved with someone who has a current drug problem. It can only lead to problems. And, I agree that you do not want to someday bring children into a house with drugs. Maybe some day when she has matured a little bit and gotten off the drugs you can give it another try. But for now, it is probably best to just be friends. But of course that is all just my own opinion.