No. 83128
This one, although technically they have tried to make their relationship work, but it doesn't work in the end, because the man's side think that the feeling isn't there anymore, and he himself didn't want to make it work either. At least that's how I interpret it. This song from the same musical might fall into the unrequited love theme too :
I'm Still Hurting (Anna Kendrick Ver.) :
https://www.youtube.com/watch?v=fpI_Y0ZGkk8