How to get a guy to leave you alone?

[Lucy]

I am 16 and this lad is 17. I started talking to him about a month ago. He has problems at his home and so him and his dad are always fighting, so when he got kicked out and asked to come round for a few hours while it cooled down at his I said yes. However, since then he has slept round at mine (uninvited!!) several times, in half term he stayed for 5 days before reading my messages :/ where I basically said he was being awkward by not getting the hints and leaving. So after he stormed out I didn't speak to him for 2 days before having his friend knock on my door with him, only to find out that he had cut his wrists, drank bleach, got smashed and tried to overdose. Of which he blamed on me. He has told me that he loves me and I have told him I will not go out with him. However, I think he is now stalking/harassing me, as he has been turning up (apparently as a complete accident) wherever I am at the time, even when I have not told him where I will be, including late at night. Today he decided again that he was coming to my house (he never gives me a say in it, just tells me he is coming round). He has been here for over 5 hours now, and i'm afraid he will sleep the night again and then not leave! How do I get him to stop liking me as he doesn't seem to be getting any hints and I am running out of excuses to force him not to come round! I need a way that will not upset him though as I do not want him to self harm again.
Any help is VERY appreciated, me and my mum are out of options!!

[Anzu]

Stop dropping hints and tell him bluntly to get out of your house and never speak to you again. Tell him that you have documented his behavior and will call the cops next time he sets foot on your property. Then block him online and ignore him completely. Same for any friends who try to take his side. This guy is a parasite, the only way to get rid of him is to cut him off.

His threats of self harm are nothing but a manipulation. Even if he were serious, you are not responsible for him. If you truly are ever worried, call the police and tell them he is suicidal. The threat of involuntary commitment should teach him not to mess with you.

[Ɨ♥Мy♥Ԍғ♥]

Tell him bluntly and straight to his face they he MUST leave you alone and STAY away from you. If he doesn't leave you alone, call the police. Tell the police what been happening and about him and what he been doing, so it always good to ask the police on what to do.

Well since you and your mum are out of options, call the police for help is the only option you have left. So to hopefully end this for good, call the police. If he goes to jail for x amount of time, than so be it. He has to learn the hard-way, that what he is doing is wrong (even if you feel bad about it). Even seek out an restraining order (or similar, depending where you live) against him, so he can't come near you for x amount of meters (if he breaks it he goes to jail).

Make sure when you make a threat towards him, make sure the threat is do-able and you can follow through with it (morally and legally of course). For example, if you tell him that you will call the police if he doesn't stop leaving you alone, than call the police. Because if you don't follow through with your threat, he wont take you seriously and he knows any further threat will probable be a bluff/lie. Be brave and call the police, you have to get the ball rolling in dealing with this (you tried dealing this with yourself and it is not getting you anywhere). Seek out an restraining order from the courts.

Don't give into his begging or excuses for ANYTHING, even if he come knocking on your door, when it raining. Just telling him to go away and leave him outside. He just harassing you and taking you for granted. At some point enough is enough (and clearly you are way pass that). He hopefully take a hint and probable leave. If not he get sick and that IS his fault for staying out in the rain.
If he says he cutting himself or whatever, he probable just manipulating you. You are not responsible for him, if you are really worried call the police instead.

Cut contact completely, block his number (or change your number), block from any social media, etc... if any friends or mutual friends stand his side (do the same to them).

Good Luck!