I have ethics against flirting.
Why, you ask?
a) The objective behind flirting is to form a romantic relationship with that person (Assuming you are not one who does it just for the fun. I'm assuming most introverts do not.)
b) I want to develop a relationship formed on the best analysis of who that person is.
c) When you're flirting, you're acting. You're not behaving as you normally do.
d) Flirting is therefore a detraction from the main objective. It wastes time, b/c it takes way longer to figure out the practicalness if that person is someone that you should actually be attracted to.
I see flirting as a complete waste of time. I'd rather just not hide the fact that I'm interested, and then wait until I feel comfortable enough to be frank with my feelings.
I'm mildly scared that by flirting I will be unintentionally giving off a false version of myself; I don't want people to do that with me and therefore don't flirt.
The downside, of course, as an ENFP friend of mine pointed out, is that I likely give off "mixed signals" because I don't treat the object of my desire any differently. In my head, I like to think that I do, but that's up for discussion, I suppose.