Simp

noun: INFORMAL•NORTH AMERICAN

A male or female in a one sided non-sexual, platonic relationship. Generally excessive in giving out what's available both emotionally and physically but receives little in return.

noun: simp; plural noun: simps; adjective: simping

Example 1: Did you hear that Drew is simping for that that new girl? Just dropped half his savings to get her a new car.

Example 2: Why is he going so far? They only talk and I know she said they would never have sex.