Is it love or lust. Your suggestions please.?

Am an indian. I was in love with a guy n it was broke up few mnths back. At the time of break up i was in great grief, this is when i met another guy. He said that he liked me so much and was in love wit me for an year. He was so nice to me and was highly consoling me out of my brkup. Later at 1 point of time, i started liking him and almost fell for him. Later aftr this wen talking abt marriage, he said that he cant marry me bcoz of caste prblm. Bt he wishes to be wit me all his life. He wants to me my bf til my mrge n gud frnd aftr mrge. I feel that he uses me for his happiness, bt stil i couldn move away from him, bcoz i love him deep in my heart. He too loves me deeply bt nt ready for marrige. My heart says to love him, bt my mind says to dump him n move on. Wat wil u decide if u are in my position.