So there's this girl A and her friend B that i have caught them staring at me and my friend, i wanna make a move, how to approach her?

We see them every 10 mins while walking in our city ( small town) but i have never talked to her.

She has had a lot of eye contact with me and im sure she has noticed that I have too.

How do you approach her? What to say?

(P.S. i saw her friend B at the beach today and she was checking me out)

How do i initiate, i cannot find the perfect opportunity.

Thanks a lot.