where did my heart go?

How did I give my heart to someone that doesn't even want it? I didn't reslize I did it till a few guys wanted to get with me and one wanted to date/marry me. I feel horrible about it, he asked me if I loved him. I told him I didn't know and then he asked if he moved up here if I would.I told him that I honestly didn't know. Reason I said that is because I am in love with someone that doesn't want to be with me. He said that we could never date because of the past I have with his extended family.. I wish I knew what to do. I wish I knew how to save my heart....