So here will be the place for the UNBIASED (yes, Peter, that means you) description of other types from the point of view of the ENTp. There will be no flaming, no arguing, and absolutely NO bitching in this thread. There will also be no needlessly offensive type descriptions.
LOL what am I saying, there will be all of those things. Oh well. Just try not to.
At first, she will seem like just another one in the crowd. She'll giggle at your jokes and pay attention to you, but after a while, you'll notice that she can actually be good for you; she begins to stand out once you make an effort to get to know her better. She's giggly, affectionate, and, above all, natural. Enter the ISFp.
The easiest way to recognize an ISFp is that, once you've gotten to know her, everything will be fun. You could sit on a log and throw sticks at a piece of dog shit with her, and it would be the time of your life.
Your first impression will most likely be one of two things. The first possibility will be one close to INFp: she will be happy-go-lucky, bubbly, and emotional. These are the Feeling subtypes. They should be approached openly and with whatever kind of outgoing behavior you can possibly muster: an open approach is not unmerited, and your assertion of interest will most likely be welcomed. However, don't be overly aggressive: unlike an INFp, she will not be attracted just by your assertion, and you will need to prove that you're "deep and interesting' before you can really catch her eye.
The second type, however, is much more reserved, and by far the less approachable type. Upon first impression, she may seem somewhat similar to the former, but it will become apparent once you observe her habits that she is actually much more withdrawn. This is the Sensory subtype. She can definitely be sociable, but tends to need her "alone time," and even when she gets to know you, will not give up her "me time" to indulge in your ideas. She can, however, be quite the gossiper: she is very receptive to your objective analyses of social situations, so use whatever cues you pick up from other people and tell her how you see things developing within your circle of friends. You will definitely need more time to crack this egg than with the former; however, a rewarding and stable relationship, friend or significant other, can be had with patience and a tactful display of interest.
No matter which subtype you encounter, if you play your cards right, you can be sure of a either a good friend who will tolerate your occasional tactlessness, and will even help you to mend the wounds that your behavior can cause. In addition, she can provide the occasional emotional recharge that you inevitably need, and your attention-seeking behavior will wane the longer you're with her, to the point that other people will be able to appreciate your real talents to a much greater extent than before. As long as you can maintain stable relations with her, you have an ace in the hole, someone who can help both you and others overcome/overlook your weaknesses, and will reward your strengths and help you develop them. After all, that's what duality's about, right?