L.C.
Well, we are super oldschool, Cheryl. What I said to my boys at that age was, "You can have all the friends you want to, boys or girls, but no serious girlfriend. She is welcome over, or you are welcome to go to her house, as long as it is a group function. You can go to youth group together, you can hang out with friends and that's it."
I also didn't (and still don't) let them use the term "hot". Pretty is totally fine, but the other is a referrence to them being sexy and I don't feel it's too respectful.
It's okay to like girls. We are awesome, after all. But that's where it ends when you're 11.
ETA - @Momof4 - I'm too sexy for my answer, too sexy for my answer...NO WAY I'M DISCO DANCING!!!