A Broken Heart, Fixed by new Love: Cheated Emerald Sustrai x Caring Male Reader

This is a story I thought of doing and actually also the reason is, there is NO story where Emerald gets cheated on, so here it is. Now, one day Emerald was on her way back to the White Fang hideout where she saw her boyfriend Mercury making out with Cinder, as that happens she felt betrayed by them and she runs away...