Romantic Bull

When someone sees all the red flags before a relationship and is attracted to them

Dude1 "Hey did you hear Dude4 broke into Dude3's house just to watch him sleep?"
Dude2 "Wait doesnt Dude3 have a crush on him still? And he's ok with that?"
Dude1 "He's a romantic bull, sees all those read flags and runs at them"