I have a huge crush on my cousin
Why do you have a crush on your cousin?
He is masculine and I like the way he dresses.
He sounds nice, but It's not okay to have a crush on him. You shouldn't do anything about it, because that would be incest.
It's just a stupid crush.
Even if it's just a crush, it's wrong to be attracted to him in any way. You should just stop thinking about him entirely and find someone else you'll like.