Should I buy a membership for my friend?

[Seshat]

Bottom line, you really don't know how many times I wish he was dead so I don't want to deal with him, which shows you how I don't know how to deal with him. Easy enough to tell him to go away, but how to stick to my guns if he doesn't go away? I don't have any other friends to be a wall against him, and I don't like my family members enough to ask for help.

"No."

Learn it, use it.

It's hard at first. I know it's very hard at first.

"No, you may not stay the night."

"It's time you left now."

"No, I'm not coming to the game with you."


Once you say something like 'it's time you left', if he continues to be on your property (and yes, rented property counts), he's legally trespassing. You can - quite legally - call the police to have him removed.
Police do tend to be reluctant to respond to 'domestic disturbance' because in many, many cases both sides see them as the bad guy. But if you contact them and are polite to them, including while they're present making your friend leave, you're more likely to get helpful response from them.
And it should only take one visit from the police - or even just you genuinely calling them - for him to understand that you. are. serious. No, he CANNOT stay the night.

[Pixilated]

Lotsa votes for Caffienated_Caramel's advice and Seshat's.

Ultimately, you must be the one to decide what to do. But if you are at the point of wishing him dead (even occasionally) it sounds to me as if you are well past the point where you need to consider doing whatever's necessary to get him out of your hair. He wants books from the library? Walk or take a bus. He wants to visit and chat? If you want contact with him at all, go somewhere neutral, so you can get up and walk away when you want to. Personally I would not invite him to my house after some of the stunts you have described.

You say he has been a good friend in the past (and could be again) but it almost sounds to me as if his friendship has a lot of strings attached to it.

One thing I can suggest is that you roleplay, in your head if you have nobody to play his part. Practice saying "No" in your head so you can do it for real when it's needed. And resign yourself to the fact you might have to get very sharp with him before he gets the message.