Is it bad?

i need your guys' opinion :/ so i've start talking to this guy that i think is really cute ^_^ :O here is the problem I have a boyfriend. and i'm not sure if im doing something bad here Am I? i dont think so but still i have this bad feeling :/ I guess im flirting but im feeling really guilty about it -_- I really love my boyfriend but when i talk to this guy i blush and well i have a crush on him Aha people what do i do Please help!