I liked him and it turns out we're family!?

[Jay]

This guy came into one of my classes in school as a new student and he reminded me of my boyfriend.... i kinda started to get warm feelings for him but then recently i found out that he's my second cousin so those feelings disappeared. I have this strong urge, however, of wanting to get close to him…like …. i want us to be best friends/best cousins. I want to approach him and tell him we're family but i don't want him to think i'm weird because i found out through facebook (i barely met him). We're not even friends on facebook, i just looked him up after i found out his name. I know, major stalker lol….. Should i just go up to him and straight up tell him "Hey guess what, i found out we're related " or what should i do? Give me advice! I want to finally have a cousin i'm close to. I just don't wanna seem weird to him lol. Thanks. How could i go about being friends with him when i'm super socially awkward??