It's normal for your daughter to experience "crushes", and most girls WILL have their first kiss in middle school- but 11 is a little out of control. And talking about sex? That IS out of control. On the other hand, though, (it depends on the details and circumstance) it may be only a friend that happens to be a guy and they have questions about sex. If this is not the case, you need to have a serious talk with her. Consider taking a special trip for one night to a nice, affordable hotel if this is within your abilities, and while you are there, ask her if she has questions about sex, or dating, and then explain on NO uncertain terms that she can not have sex, date, etc. etc. if this is your belief. Then try to get her to talk, perhaps get her to explain what's going on or ask if she's being bullied or is scared of something. She may have out-of-balance hormones too, so you may consider going to a doctor specializing in tween/teen girls to get help. All of these things could be encouraging this behavior, so try to eliminate them. Above all, it's important to TALK TO YOUR DAUGHTER. She is going through a difficult time, and you as mother need to be sure she is comfortable talking to you. I hope this helps!