Maryland  |  Family Law

I am living with my boyfriend now for almost 7 years. Recently, he has decided not to get married. In the time living together, I have contributed to all of the lving expenses to run our home. He was also able to purchase rental property because of me paying the bills, but obly put house in his name .I was wondering if I could recoup some monies spent under the assumption of a future marriage if we break up?