This is how an NF should strategically lure INTPs. I know this because I'm an INTP approaching xNxP status currently.
1. If you're going to flirt, flirt smart. For ENFP's use your Ne to make open ended figurative statements. Drives INTPs nuts. Imagine how ENTPs flirt (usually joking a lot, and smartly if I may add), only add more femminine touch to that.
2. It helps if you're pretty but never act superficially (like what most ESFPs do). But if you have a good SF tendency, that's just fine, but never ever forget to entertain an INTPs intellectual pursuit.
3. You need not over-analyze as much as INTPs do things but you can do other things that's similar to what INTPs do. For example, if you read Neil Gaiman's Sandman, you can tell the INTP about how you interpret the underlying symbolism with regard to its various illustrations, and you can even inject a Feeling element to that, but don't get to say shallow statements like how cute you think Morpheus is.
4. You can be extra touchy if you like. For an INTP, I like that, just never lose the intellectual factor of the conversation. A certain F element is allowable, and by default, INTPs don't really expect females to have a strong Ti function. No ENFP female should pretend that she understands Ti to a certain level that INTPs do. It's understandable.
5. If you have a certain NF moral conviction that you live by, show signs that you can live with them. INTPs hate erratic behavior very much. To a certain extent, occasional mood swings are allowable, but at least show a sign that you have principles.