Responses
Welp *SPOILERS*
Soooo long story short, the two were in love with one another (they were pretty damn cute as well) but one of them chose to fricken move on and date > marry > and have kids with a girl leaving the other one to eventually do the same. Its a prequel to (i think) 2-3 other mangas which are ALL good.
If this ends like Hana No Miyaka De ima go and /wrist