Is it wrong to have a small crush on a cousin?

I thought this boy was cute before finding out we were related. His mom, my dad's oldest sibling I think, hasn't been a part of the family since before I was even born. I don't consider this boy family. I think he's cute, and we've been exchanging selfies on Snapchat. I feel like a bad person for enjoying the look of this guy...I don't know. I won't pursue anything, I just can't help but like the way this guy looks.