I am going to get flamed for this. But if they are likely on first date a the girl noticed me so many times.

I am nomading in mexico city. Second day today.

While I did not approach here is what Iw as thinking: play a curious tourist. Go up and say — are you guys local. The girl may take interest in talking with me because likely she is local and the guy is not. At the end I could be bold and say — I will add you on insta.

Suggestions?