Am I the jerk for blocking a 16 yr old who asked me sexual questions?

So basically what happened was that I had this friend, let's call him D. An he would always call me Mamacita and call me short.

Noted, I told him numerous times to stop saying that stuff but he didn't listen. And then he asked me if I was wearing a bra. I was in PJs and also he makes me feel uncomfortable as a nonbinary person, using she/her pronouns exceteria.

Anyways, what caused me to block him was that he made explicit comments to me in front of my girlfriend and then was rude to her. And so I blocked him. His friends came after me, and I want to know, am I the jerk?