He said "Ew"? 😳

I have a crush on my best friend. I don't know when it started but I keep it a secret to myself hoping it'd fade away but well it's still there.

So being the supportive friend I am he said he likes a girl but she's like 16 and he's 20 and I'm 19. Idk he said he kinda has a thing with her but he doesn't talk a lot with her.

But if I asked him about her he would give vague answers or just don't wanna talk about her like it's annoying him.

So one day I talk to him jokingly like "How would your girl react knowing you hang out with me more" and he replied with "my girl? ew" and laughed.

I'm so confused. He says he kinda likes her but how can he say ew? I don't get it.