[James98]

I thought I was getting better, but I can't shake it when I'm out in public. I feel ashamed to have people look at me.

You really need to overcome your shyness and approach that (potential) boyfriend. Once you have established a relationship with a boyfriend I am sure that he will assure you that you are very desirable. He will be proud to be seen in public with you. Next time you see him be sure to establish eye contact and I strongly recommend that you go and talk to him, even if he is with other people. I fear that since you have seen him at least twice since moving, but not followed up with contact that he will take that as a message that you are not interested. He has already made it clear that he is interested in you,  but if you continue to ignore him, he will give up on you.