Gay best friend in love with me

He used to identify as gay but now he says he's bisexual and he's in love with me. He hasn't confessed but he makes it pretty obvious:
● sends affectionate reels like "send this to the prettiest girl u know"
● always saying I'm so perfect and beautiful and smart and amazing and everything about me is beautiful
● says shit like "i have something to tell u but u would be petrified" and says i "know what it is"
● said penguins give rocks to their loved ones, i replied "that would work on me lol" and he said "so if I spent 2 weeks in the woods searching for the perfect rock for u, that would mean marriage? Is that what you're saying?? What's your favorite rock?"
● says he wants to be with me forever and makes me promise I'll always be with him
● says he wants to give me flowers and asked what's my favorite flower

So basically I'm fucked and I'll lose the only friend I have. So far I've lost 4 male best friends due to them loving me. At least I dated one of them. I'm gonna lose my mind now instead of being awkward with only one boy in my class (another ex best friend that fell for me), it'll be TWO. I'll have to avoid TWO people. Omfg I hate being alone but now I'll be forced to be. I wish girls were nicer to me and didn't abandon me when I considered them my best friends. Maybe it's partly my fault, since I expect them to like me as much as I like them (which is a lot). And don't come for me saying I'm a lesbian, because I'm bisexual, I just really like having girl best friends, they just dont reciprocate that feeling.