As Rapunzel asked, Do you have a T? Quitting is very scary. It is important to have a support system. Do you have people you can/ are willing to call when you are having really bad cravings? Are you making efforts to cut less or reduce how often you do it? If you want to quit slowly you need to make efforts to do so. SI is a coping mechanism, and it is impossible to quit without having other coping methods to replace it with. Also a T can help you work on underlying reasons you SI which can reduce your desire for it.

I'm sorry that you feel like your boyfriend isn't understanding. He is probably really scared he's going to lose you and is just trying to do what he thinks is best. Sometimes others ignorance can be very damaging. However, there are a lot of great sites for family and friends of those who SI. Below I have listed some. I really think you should have him read these, maybe even go over them with him. Ask him if he has any questions after reading the sites.

http://www.helpguide.org/mental/self_injury.htm#helping
http://www.palace.net/~llama/psych/ffriend.html

Also, on the first site, right beneath the helping portion there are ways you can help yourself. Maybe switch to limiting yourself to 2x a day and then substitute one of the coping methods listed to replace the other time.

I hope this helps some.

Try to take care

((((((((((hugs))))))))))))