Ugh!That's a horrible situation to be in.

My first thought was maybe you should say something to your friend and let them fight it out.

Maybe it's just how my mind works,but a scenario ran through my mind of him maybe doing something to you against your will.Then your friend believing his version of the story.

I would be afraid of him,especially since you have made it clear you don't want a sexual relationship with him and he continues to be weird.

To me it IS a big deal.It's sexual harrassment.

Stay safe.