AITAH for feeling uncomfortable?

So I (f20) recently reconnected with my best friend (m21), the problem is, he keeps insisting on trying to get with me. Before we reconnected he never did any of this and I don't quite know what to do. (He stopped talking to me out of the blue and just ghosted me for over a year) I'm not straight and don't like him that way and I have told him this repeatedly. Although he never made any physical advances, he calls me pet names and is very inappropriate sometimes. I have told him that I'm uncomfortable but he doesn't seem to understand. So reddit, AITAH for feeling uncomfortable?