I'm flirting with my cousin!
are you flirting with your cousin for fun, or because you look at them as a mean to fulfill your sexual desires or something else?
No, I'm not doing it because of that.
It's your cousin so they're family, It's not normal to flirt with your own cousin. You should stop it.
but I love them.
It is fine to live them in a family way but not as a sexual interest.   You should look for someone outside of the family to meet a sexual need.