Help! I am so confused.?

Ok well I am datin this guy and I love him to death. There's this other guy that I used to date a while back (we were engaged) but he broke up with me. Well he called over to my house on Sunday wanting to get back together with me. I told him that I would think about it. So, I don't know what to do. I am so confused. He already broke my heart once and I am datin the first guy and he treats me like the damn queen of the world. I don't want to hurt anybody's feelings. Please help!