Looking for a yaoi manga

Hello, I want to reread a yaoi, but now I can't find it. What I remember: High school. The uke is older, but slim bodied, and the seme is younger, but has more of a yankee feel (piercings, blond hair). The seme is like 'I have someone I like' and the uke's like 'you can practice with me' but then the seme confesses to uke and uke thinks its just practice, while the seme thinks they are going out. To avoid the sex, the uke says he won't sleep with someone with blond hair and piercings, so next day the seme shows up with dyed black hair and has taken out his piercings.
That is all I really remember. I know it's like every other yaoi out there, but if you know, please tell me!! Thanks!