Me and Her Boyfriend

Me and Her Boyfriend manga summary: When the ex-girlfriend is threatening to kill herself and you have a hesitant and irresolute boyfriend, you end up in an "abnormal" love triangle relationship. The hardest part is that only I have to shoulder all the pain - me, the "other woman" in this Love Triangle. Tolerance and understanding, should these two be this painful? Until that person who is the reason for all my tears shows up...