Hot girl walks by. Make a point of checking her out. Believe me, there are a myriad of ways to express attraction to a certain type of person when in proximity to someone. Arguably the most direct being eye contact with someone you could be interested in.
Girl sees two men walking together holding hands. One makes eye contact + explicit gesture at her. She might think he's a creep, but probably won't think he's gay.
> Thank you. From where I am, people have only relatively recently been open about this. Like I said, experiences vary.
You're welcome. FWIW, I'm in France.