Tinder became popular for the exact reason that it is creepy and wrong to hit on people in public.

Sorry to quote you from another thread, and I don't mean this as a gotcha, but it seems like you have unhealthy hangups about love, relationships and sex. And I'm not judging you for it, you probably have your reasons. But don't act like normal human interaction is something morally bad or something to be ashamed of. That's a you problem.