I feel worthless

A guy I'm friends with wanted to hang out. Which was cool. He's going through some shit and I wanted to be there for him. He started trying to rub on me and I said no. I tried leaving and he wouldn't let me. I had to say 'no' for 30 minutes before he finally gave up because I told him I was on my period and hadn't showered in days. (Both not true). I'm so upset. He literally wouldn't stop for nothing. He kept saying why? Why not? Ugh! Come on! And I told him over and over that I just didn't want to. It's sad that no doesn't work anymore. That's the last time I ever try to be there for him. Please no negative comments. I'm looking for positivity and advice and this is the only place I could come to.