Seriously, T., you are WAY over-reacting. I say this to you regardless of whether you are a mother or a father.
Stop trying to use a gay-meter on your daughter. Allow her to be herself. She needs to be studying in school, having fun with her friends, being mentored by parents who teach her to be careful and thoughtful about her life. She also needs at 13 years old to be ENJOYING her life, not have to worry about hurting your feelings over looking attractive enough for the opposite sex.
I wonder if you understand how strange it sounds for you to on one hand say that you want her to like boys and be attractive for them, yet you don't want her around the boys because, as kids themselves who don't know how to behave like "young men", they might touch her when they are "hitting". Good grief. Stop trying to push her toward boys to prove to yourself that she isn't gay and stop trying to yank her away from boys at the same time because you're afraid that she'll like them after all.
Girls never learn to like boys first, T.. They learn how to deal with relationships by socializing with their own sex first. Boys do this too. That's the way things work. Same sex relationships are comfortable. It is totally up to HER when she starts trying to move into the arena of "friends who are boys". At some point, she will be considering the switch to boyfriends. This is something you do NOT get to disapprove of. You can tell her that she cannot date until she is 16, that socializing with boys needs to be with a group. THAT helps her learn how to do this. Managing the process by trusting her and helping her is what you need to do.
The way you teach your daughter to not be a hoochie is to not allow her to buy suggestive clothes. You HAVE to understand that she cannot dress like a nun or she'll be an outcast in her group. She can be part of her group without wearing outlandishly suggestive things. It's a balancing act and you just deal with that. Her mother should be working with her in this regard. If there isn't a mother in the picture, then you need a trusted woman friend or family member who your daughter likes and respects to help you navigate this. NO teenage daughter will like her father trying to be the "mother" where this is concerned.
Let her be a child by not pushing anything on her as far as boys are concerned. So what if she and her friends say they love each other. I'm not gay and I tell my girlfriends I love them! You are seriously not understanding ANYTHING about young people or women if you think that this isn't normal. And if you're a woman, T., you must not have many girlfriends...
So stop talking to her about this stuff. You are mighty confusing to her. She doesn't need this. Love your daughter for who she is so that she feels confident and so she feels that she can trust coming to you for advice when she is READY.
There are things about the young generation that you are just NOT going to understand. The words they use are different. The things they are interested in are different. Boys and girls have ALWAYS been different from each other, but they are different now compared to how they were when you were growing up. You have to get past that and stop trying to over-analyze.
Good luck.