I have a huge crush on my second cousin. Should I make a move?

Anonymous
My family owns a cabin up in Bemidji, Minnesota, right on the lake. This cabin has been in the family for 40 years and has been the meeting place for several family reunions.
Some of my aunts and uncles spend a week or two up there every summer but every few years the whole family decides to come from all over the country to meet at our family cabin.
So last week, I went there and met an extremely cute guy. I later found out he is my second cousin and we have the same great grandma. I'm almost 18 and he is 21. I added him on facebook and he later followed me on Instagram. Would it be creepy or inappropriate to tell him that I like him?
I have a huge crush on my second cousin. Should I make a move?
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