Regrets come slowly after truth starts sinking in your system.

For her, it took her years to realize what was actually happening, what she lost and who she let go. But fate will swing by and give them another chance, can this time be, the time to make her regrets her valid reason to love again? 

For him, he waited long enough, suffured to much and gave his all to let her be. But his heart calling, he can't just ignore. It's a calling of not just love, but the call of what he thinks both of them deserves.