Self harm

Okay so I used to self harm pretty bad, but when me and my boyfriend got together I wanted to stop completely because he makes me happy. So I’ve been self harming 4 years...and I stopped 3 months ago and kids are picking on me again and my grades are bad because I can’t focus and I want to do it again...should I talk to my boyfriend about it? Because he usually helps me with these type of things, like I used to have a eating problem where i never wanted to eat because I was having self doubt issues...and he helped me with my self thoughts, and now I eat fine. So what do I do? I can’t tell my mom because she worry’s to much...