My mom's best friend's husband misbehaves with me!

I stay at their house because itsnear my college. My home is very veryfar from college like a different city. He says dirty jokes n keeps looking at me. He once entered my room when I was changing my clothes n was like u maintain yourself a lot. He keeps touching me. I then got really angry n screwed thehell out of him. Buthe still gives those dirty looks n touches me in his wife's presence! He's says m like his daughter n does all this cheap stuffs! I don't know what to do? How can I tell my parents about this?
My mom's best friend's husband misbehaves with me!
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