obsexing
You're so obsessed with having sex with one person that you think about it all the time. You're like a dirty, love-crazy animal.
I was eating cereal and thought about my crush. I dropped my bowl and it was a mess.
I told my mom I was going to the store. I came back with a bag of chips and my crush's phone number.
I saw a cat and thought it was my crush. I tried to hug it.