Tips on how to approach a femboy

Hey everyone! I could use some advice. Yesterday at the gym, I saw this really cute guy and wanted to approach him, but I wasn’t sure how to do it without coming across as a creep. We were working on different body parts, so it felt a little awkward to walk up to him and ask how many sets he had left . Do you have any tips on how to start a conversation in a casual way without making it weird? Thanks for the replies.