A physical come on is different. There is no way to know the outcome if you don't try. There is a name for guys that don't take risks, losers. If she rejects you then fine back off and find someone else. Plenty of fish in the sea. That is how the game is played.
Guys that don't back off are creeps and need to be kneed in the balls.
Plenty of fish in the sea? Aren’t you one of the regulars here who decry that most American women are fat, lazy gold-diggers and not worth the bother? May have you mixed up with the others who gather here like Bruce J. Friedman’s Lonely Guy.