Studies show that say that our fear systems aren’t so different from our attraction systems.

When we’re scared our heart rate increases, we may shake, eyes twitch, etc.

Well guess what? The same happens when we’re attracted to someone

This is purely hypothetical, but if a girl for some reason is scared of you(your bad boy reputation, violent reputation, crime history, thinks you have bad intentions, etc)

and then you follow it up with talking to her warmly, appear calm, and make her feel special. Showing Good vibes that are contradictory to her possible perception

Then she may interpret her psychological processes as attraction.

And not put you in the creep/uncomfortable category.