Was wondering how you deal with heights?

Okay I recently met a guy online who's smart handsome and sweet however there's a problem we are planning to meet up one of these days but I'm not secure about my height. I'm 5'7 I love wearing high heels and realised recently that he's exactly the same height as me which means that I can't wear sorts of things around him otherwise we are gonna look weird together. I honestly don't mind wearing flats every time around him but that's not my style.

Any suggestions?

Shall I stick with the flat shoes?