So before this last semester I didn't really party much at all, but I joined a frat and so I've been at a lot more parties. I've had 3 girls like touch my face (like their open hand to my cheek I guess) when someone introduces me to them. And then another girl I already knew who has a girlfriend and that I was about 99% sure doesn't find me attractive did it at a party recently. So what does this mean when they do it?