First off, cutting is not only harmful but can also become addictive because of the chemicals your body releases in response to the pain. Some people start out cutting when they feel sad or frustrated and eventually do it compulsively and are unable to stop, so try your hardest not to let it get to that point, as then you'd need medication to block those chemicals. Second, if trying to talk to your friend doesn't work, you have a few options. One is simply trying harder, such as expressing your sadness and fear of losing him around him. Another is calling, texting, emailing or writing him a note explaining how you feel. Another is to get another friend to try talking to him for you. The last option is to give him time, in case he simply needs to sort things out in his own life and will eventually come around. You can try one or all approaches depending on what you feel would work best. You know better how your friend may react to each.

As for the se.xual harassment, if you feel comfortable doing so yourself, you can tell the person to stop and that it upsets you. Sometimes people just think they're being funny or are obnoxious. Or you can have a friend tell them for you. If you tell a councilor or other school administrator, they could resolve it for you, but sometimes the person feels resentful, so it is best to give them a warning yourself or from a friend first and then proceeding to authorities if it doesn't stop. Of course, if it's serious or you don't feel comfortable doing that, you can skip straight to the school authorities. It depends on what you feel most comfortable doing.

Call the cop on the bully