"Simpin over someone that you dont talk to or know you exist."

When a person obviously shows the characteristic of being a Simp to another girl this can include Orbiting Being Desperate, or obsessive conversation with that person to the point where they ignore everyone else just to talk to her.

a current cardinal rule of dating. you do not treat a love interest like a significant other unless they are in fact your significant other. this keeps an individual from being emotionally invested and potentially getting hurt by someone they never actually dated.

"Simpin over someone who you dont talk to or know you exist."

Used to describe someone simping in a joking and friendly way.

Something made by bookeymations in BFS 5
and also it has affects

When you start Simpin on another man’s girl without realizing it because you are jealous of loosing your girl to somebody else.