I am in a bind. In 2004 purchased a house (with money for a down payment from my ex-boyfriend as a gift). We have never lived in the property together; he is a real estate investor. Our original idea was to flip this house that he originally purchased in foreclosure. After three months without a contract, he recommended that I move into the house. In June of 2006 told him that I wanted to end our relationship and sell the home. He dragged his feet and made an offer to sign the house over to me. He went so far as to tell me that I should receive some paperwork in the mail. After a few weeks he advised that he would not sign the property over to me. Finally in October and December of 2006 I advised that he needed to let me know how we would move forward with selling the property. We had a reasonabe offer last week that he declined. (I own the mortgage, his name is on the deed). My concern at this point is that he may turn down reasonable offers over and over again with hopes that we will reconcile our relationship. I feel like a hostage. How long can this go on? What are my rights?

Take him to court. The judge will order him to accept an offer after he hears the case.
You need to show that he is harassing you.

How can you have the mortgage in your name and the deed in his ? I would not think a mortgage company would allow this ?

But if he is owner of the properly on record, then you "own" the mortgage, which means you should be allowed to sue for the mortgage payments from him.

But I believe he has really messed you up doing things illegal and it will take going to court to clear all of this up.