oneshipper
Oneshipper is a term that refers when someone ships a singular ship while their stay in a fandom, and has/shows some kind of "loyalty" to it. They are the reason of the so called "ship wars" inside fandoms, and may or not be obsessive when it comes to their "OTP".
"This new ship is quite cool!"
"Yeah, but I can't like it. Im loyal to my ship."
"You're such a oneshipper."
"Yeah, but I can't like it. Im loyal to my ship."
"You're such a oneshipper."