SFL likes ML. But when she realizes that he likes someone else she silently leaves him and wishes him to have a good life. And then a guy comes into her life and loves her so much. She takes time to reciprocate his feelings and eventually likes him back and have a happy ending with him.

Most of these have the guy she ends up with existing in her life before she gives up on the ML, but fit otherwise in that she takes a while to fall in love with him.