if it continues, i'd be pretty worried.
maybe he's just going through a phase.
but if it gets to be more serious, talk to him.

=/
Tell him that self-harm isn't a path he wants to go down, because it's really hard to get out of unless he/anyone does it for attention.

Self harm can become an addiction.. Ask him weather he really wants to do it for a big part of his life??
I dont think you should forget about it, but I think you should just keep trying to tell him, tell him what he's doing isn't good.. Tell him its hurting you..

thats rough.
well, not much you can do about it.
just always be there for him and comfort him when he's in need or angry.
make it obvious to him that you care and that he can come to you with anything.
most of the time people won't just stop self harming themselves if someone simply says, 'stop', but maybe after a while he'll come to the realization that he doesn't need pain to feel better.

just keep hinting at it
but it sounds like he is kinda insane

He might just be a masochist at heart? Not to worry you even more but, there are some people who are like that. People who are masochists though find pain or abuse to be a turn on. If you're familiar with S&M? Yeah, that kind of thing. That could be it, that might not be. If it makes him happy, like smiling happy and giddy to hurt himself he might be one. Something to note though, is that he most likely is one if he likes it when others hurt him too. So, say you slap him he might get a rush from that. If it's just self-harm that he likes well ... he most likely isn't, so rest assured.

About the self-harm bit though, if you're really absolutely not comfortable with it, you have to be firm with telling him that. If he's smart, he'll try not to do it as much and eventually quit altogether (get him off it gradually) If it gets really bad, don't be afraid to take desperate measures. But before anything else, find out the root cause of this and try to work from there.

Talk to him about it in person, for sure.

Sounds like a real creep O_O

LOL. He obviously feels emasculated.
Are you two having sex?

Sounds like you're both being dumb, overdramatic teenagers.

~Maggot

---------- Post added at 12:11 PM ---------- Previous post was at 12:07 PM ----------

You can't neg-rep me, Kate. You're too new. Har har @ chu and your anonymity fail.

~Maggot

Is the sex good? And don't lie either.
Does he control well?
Is there a balance?
Do you give in to him every once in awhile?
Do you listen to him?
And I'm talking about sex and the relationship in general. And don't lie. It's a bit pointless.

Reason I'm asking is because of his "new animal" line. Obviously, he believes he isn't aggressive enough, for whatever reason, and is just using his self-harm as an ego/confidence/masculinity boost.

Hi
Many people resort to self harm to make them
feel alive, the same as when people go rock
climbing or mountain boarding or other extreme
sports - it's to give them that extra buzz in life,
and they love it. Sometimes self harm has that
effect on some people. This could be why he
does it - to feel alive and human.
It could also be, as Njord said, a way to replen-
ish his masculinity and make him feel like he
has regained control over something. Either
way, I think you should be worried. This isn't
normal, and as much as he denies it; he needs
help. He either needs some new adrenaline
boost like, as I said, some kind of sports to
help him feel alive, or he needs some way of
distracting himself or feeling in control of
something, or to help him feel more "manly".
Overall, he needs some help - but he won't
go for proffessional help, trust me.
Good luck...