Please give advice

I’ve liked my bff’s brother since before we were even friends. He started texting me a while ago too. I didn’t think he liked me at all before because he asked my other friend out, and asked me to become friends with someone because she was hot, and wanted me to introduce her to him.

But now I feel like I’ve gotten mixed signals. He’s been saying he wants me to come over A LOT, and keeps saying things in front of my best friend like “Aria loves me and she’s just not saying it” or “Aria, you think I’m sexy don’t you?” Or (to my bff) “you can’t keep your friends off me can you?” He’s said that he misses me multiple times and jokingly that he loved me. He also made an effort to talk to me at school, and told my best friend that I’m his favorite friend she’s ever had. He even has two nicknames for me.

What do you think??