American men are incredibly forward with their compliments. Among the stellar gems I've heard while walking down the street in NYC minding my own business are, "You have a sweet day, angel face," and "Keep smiling that beautiful smile, girl." British men would never say these things unless severely intoxicated or being sarcastic. Moving back here while single could be very dangerous. I can easily envision falling straight into a relationship with someone totally unsuitable just because he happened to attend to me with frank admiration.* With a British man, it is possible up until the point you go to bed with him to be uncertain of his attraction to you. Just to clarify, I'm not talking about trying to suss out whether or not he wants to be in a relationship, because heaven knows I don't even know that myself most of the time. I fall into them accidentally. I'm talking about trying to figure out whether or not he actually wants to put his cock in you. To the point where you're naked and thinking, "Oh! He does. Yay!"
*This explains most of my romantic history up until the age of 30 anyway, but never mind.