It is definitely interesting topic, and it is probably more complex that it seems.
How do I know whether she cheats - if she doesn't sleep with me? She may sleep with somebody else, I just have no clue... At the same time, she may not cheat at all... She just wouldn't say...
Personally I don't believe that girls who are dressed to kill, have lots of make up, respond strongly to teasing, is very talkative with strangers and so fort is more open to cheating. It would make perfect sense because it is logical, true, but the experience suggest otherwise. There is lots of girls like that who only crave the attention, who are looking for a good time, some teasing and fun - but really have no intention to sleep with you... Which is really quite frustrating, because she is just a big teaser, attention wh*re... My impression is that many of these girls are looking for Reactions, not Results...
On the other hand, there are girls that dress more casually and appear rather more conservative, yet they are giving you clear signs of interest. You'll obviously miss it if you are not looking for these windows and are confused about the 'casual' appearance...
Girls also have 'multiple personalities', so to speak. Not in a bad way but rather they change their behavior based on their mood, and also depending where they are at that time...
Example: Met a hotty at work a while ago, suggested that I am interested. Was totally blown off, just negative responses, total brick wall. She was very nice but totally closed off, she appeared as one of those nice, naive, happy/silly girl who is just looking for a great BF/Husband. Oh well, not a chance. Haven't seen her couple of months, then I go see my friend, and she joins us as she was rather his really good friend. You wouldn't believe this girl, it was just total opposite. Sex this and sex that, I don't mean just little hints, she was literally talking full blown sex for minutes. I have no doubt she would be open to group sex, what can I tell you, 180 degree in opposite direction, like a total nympho... I wouldn't say that I was shocked, but it was a jaw dropping experience... Two totally opposite behaviors in one girl, just different place and different mood...
You know, what is also happening is, she is keeping you as a friend on her FB. You are just a guy, just a face in her stupid book. Then she meets a guy who fits her BF image, so she starts dating him. However, before she adds him as a BF to FB - she deletes every potential male competition from her FB. The guy (current BF) doesn't even have a clue that she had previous male friends, and I'm not even talking about lovers... With little bit of smiles and sweet words, she could easily make it seem that she is a virgin... I'm telling you, you just can't even make that sh*t up...
Another pretty girl, totally conservative for years. I know her from years ago, tried to date her when I was younger, needless to say I was rejected. I also know from my friends who tried to get her that she wasn't sleeping around with anyone, she was pretty faithful. So I met her again, but this time my skills are upgraded like way above skills of average guy. I destroyed that conservatism, opened her up, she even told me that she no longer wants to be honest... HUH?
The very peculiar thing is, that she mentioned several times that she considered sex as her duty. Simply like a 'job' that you have to do in order to keep the relationship running. HUH? She simply didn't enjoy sex at all. I'm mentioning this because I've noticed this behavior on more females, they simply do not enjoy much of the physical act of sex, they prefer more of emotional connection (love). We obviously know that the physical act can be improved with skills, but it just shows us that there is lots of women out there who just sleep with their BF's and husband for the sake of being together, not because they like sex. This also explains (sort of) why there is less and less sex in marriage. Husband could fuck several times per week with no problem, yet she is rather pulling away - as she doesn't really enjoy it that much...
I also met beautiful Latino girl, she was all as described above: Flirty, hot, teasing, talkative with strangers and so fort... She wanted sex, I just know. You would think that it would be relatively easy lay. Fuck no. This and that, more teasing, more denial, she wanted more and more love (and reactions)... Then she simply told me pretty much the same - that she doesn't really enjoy sex. HUH??? Latina doesn't enjoy sex???
So, IMO it is really difficult to say, there is lots of generalization... IMO just because girl acts sexy and appears to be open to it, it doesn't really mean that she wants sex. At the same time, casual/conservative girl who may not signal any sex at all, might prove you to be nympho you would never guessed...