1. (noun; m/f/x; plural: girlfriendsexuals)
Someone who is solely attracted to their girlfriend, and will only ever be attracted to and love their beautiful girlfriend.
"Why would I ever cheat on my girlfriend? I am a girlfriendsexual."
2. (adjective)
Used to describe someone who is girlfriendsexual (=exclusively attracted to their girlfriend.)
"Did you know Tony is girlfriendsexual? I didn't even know he had a girl; I lowkey thought that he's attracted to men."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.