I'm pretty sure the 2 ENFJs I am closest to and refer to the most are 3w4s; one may even be 4w3. They both have a dreamer/moody side. Both say they are shy even though they talk to people everywhere they go.
INFPs are still comparatively much less flirty/friendly/lower energy, so from my perspective it can be hard to tell where I stand with these ENFJs. I think I know, but then I see them treat someone else similarly.