Why do guys friendzone girls?

Anonymous
Me and my male best friend have known each other for nearly 8 years, and he said he really cares about me, loves me and everything, and that he misses me because it’s been a couple months since I’ve seen him. Plus I didn’t talk to him or any of his family for about a month because I just needed to take a break, relax and start focusing on myself. And after a while of us not having any contact, we got reconnected last November. He’s made it obvious that he finds me attractive and he’s talked to me about how someone will eventually get on one knee and propose to me, and it might not be him. I’ve had a crush on him for months and I told him before but I don’t know if he knows I still do.
I’m just wondering what are the reasons why guys friendzone girls?
Updates
1 y
I recently moved out of state when I wasn’t talking to them
Why do guys friendzone girls?
13 Opinion