I need advice!

Hi I’m 14 and I’m really into this one guy I’ve known him for quite a while anyways in the summer I hung out with him a bit and he started liking me we’ve been a thing since July. He always talks about how he wants to date me but I’m very shy and can’t talk to him without my face getting all red it’s EMBARRASSING. Today he finally figured out I’m not good for him if he actually wants a relationship I got so upset when he told me what was going on I started crying and yellin into my pillow idk what to do anymore