self harm + boyfriend

i’ve been clean for almost a year now because of my boyfriend. i’ve been happier than ever, but I relapsed early this week and only told my boyfriend last night. I had made a promise to him that if I had feelings that I thought would lead to me doing something, i would tell him, but I didn’t want to let him down. he cares for me so much and I hate myself even more for not telling him immediately. he is my dream guy and we talk very seriously about our future. I don’t want this to ruin it. he says it’s hard for him to trust me now. i realize that it’s going to take time to build it back up. I hurt him more than I hurt myself. is there anyone who can help?