Yes, I will tell you the best piece of advice you will ever receive. You won't take it, but a couple of years down the road I want you to remember back and say, "I should have done what that woman on the DB board told me".
You are single. You are free and not legally tied to this girl. She will make your life a living hell on earth if you do not get as far away from her....and stay away from her as you can. Listen sweetie, I have seen this happen so many times and girls like this never change. Is that how you want to spend the rest of your life? You owe her nothing, but if you spend a single night with her, she is going to tell you that she's pregnant...and then you've had it!
Please do yourself a favor and realize how many women are out there and do not take on this girl.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!
