It seems you don't learn your lesson. Despite knowing he wasn't interested in you, here you are; you were throwing up bloody flowers just for him. You knew you had three options:

Make him love you, get rid of all the blooming love, or succumb to it. Why did love had to hurt so much? His disinterest was painful to endure; his heart didn't belong to anyone, it didn't belong to you...

You had developed Hanahaki disease.