I Became the First Love of the Irresistible Male Lead

I was possessed as the male lead's first love. As the villainess who, after being abandoned by the male lead, torments the female lead and ultimately dies a miserable death. Two months from now. If I just endured for two months, the male lead would show interest in the female lead, and I would soon be yesterday's news. So, since I'd be free soon anyway, I decided to accept him until the male lead fell for the female lead and got tired of me, without unnecessarily twisting the original story. Of course, I also decided to use him (?) in return... "One more time, huh?" "But... it's too hard..." "Ariel, please..." But isn't this too much? What's with this man's stamina...? Working lat...