zahrah said:
I tend to be a little more flirtatious than I should be (it has been a detriment), so someone who is confident enough to know that I will still be loyal to them.
I'm not saying this is necessarily you, but the guy/girl also have to account for how respectful the person guy/girl being to you when they flirt. For instance, if my girlfriend met somebody/flirted with them while pretty much making it seem like I don't exist then the relationship probably isn't worth my time regardless of where the flirting goes. I agree that it probably is lack of confidence a lot of the time, but people have different views on what's respectable as well.