Please help me!!!!!?

i feel terribly BAD!! i kissed my half cuzin yeah i kissed him. well he stoled the kiss from me...and now well i don't know what to do. i don't want to tell my mom;[ i like him and all but as a great friend other than that i don't think it's right! But he says he loves me. every time we talk he says things like "your the love of my life" and all that b/s...which i think he is saying the truth i know him well enough!! but what can i do to stop liking me. i'll be honest just b/c i really need ur advice this kissing has happened more than once i knoe it shouldn't BUT i am stupid and don't know what to do!!! pls help me i know what i do is totally bad but pls. don't judge me too harshly:] i want things to be the way they use to be. we would always hang around 2gether! i saw him as a bro. but i don't know what happened! pls. tell me what i should do for him not to love me as he claims he does. i already told him to get a gf but he says he doesn't what anyone that isn't me.... pls help!!!