I have a right to say no when I don't want to get involved with certain people.

If I say that I don't want to do anything with you or that I'm creeped out by what I see in your Faves, the respectful thing to do is to leave me alone.

Leave me alone if I turn you down. Spewing invectives at me will not do you any favors, especially if they're the "throwing stones while living in glass houses" variety.

I expect people who wish to discuss to me to be mature enough to accept rejection on proposals and to understand my reasons for when I turn them down. Failure to meet these terms will lead to blocking, and that is no joke.