People keep making fun of me because I'm in love with a man that is mentally delayed, they need to mind their business right?

Yes! You cannot help who you fall in love with. People that make fun of those who don’t have full mental capacity are cruel. You gotta walk them back through elementary school training....that people come in all colors, shapes, sizes, sexualities and mentalities. Distance yourself from those that make you feel bad. They’re toxic and I bet your honey is real sweet and doesn’t deserve that.