My ex-boyfriend best friend kiss wat to do?

so am a black 16 years old girl who dated this mexican guy but right now we are taking a brake . so his bestfriend rafael just kiss me today and said he had feeling for me. he still think that am going to break up wit him and hee told me how much he really like me ...........wat should i do tell my boyfriend or wat i mean i think i like him .dont get me wrong am so in love wit my boyfriend but i think am starting to develope feeling for rafael .....please help