Yes difficult, my longing to be with her grow stronger esp when I see her. It's juz timing, when I met her, she alrdy met a guy she like and she's the ti ki type in this.This might last a while or even for several years.. there will come a time that this feeling will subside and start to fade after you realize that the situation is not improving despite your efforts.
Fairy tale endings are possible but rare.
If she give up on that guy and give chance to others, good. If not, I'm not in a hurry, not as if she or I am leaving the company. If so, I go all out before that since not going to be awkward after she or I leave. Fairytale ending or not, at least tried and have no regret.