The ENFPs I know are incredibly fun, socially warm people who always try to get along with everyone, but they are definitely fragile in some ways albeit try their hardest to hide it. I find I can bounce thoughts off their mind like a game of ping-pong without having to watch what I say much, and if I bring up a touchy topic I always qualify my intentions as honest and sincere, and they never have any trouble accepting that.
The couple ENFPs I have in mind (one male, one female) I try to maintain a position of "true friend" to them, someone they can babble on about anything (personal or not) while assuming my trustworthiness (which I keep) and they both seem content with that.
Another ENFP I know, who I work with, maintains his professional distance from me but frequently the barriers drop and he exposes his silly side.
I'd say if I could pick someone to go on a pleasure-seeking road trip with, it'd be an ENFP. (I went on a short road trip ~4hr each way with the male ENFP friend; he, my INTJ roommate and I drove out to Pittsburgh one time and while my roommate was the least silly and most quiet of us, the ENFP and I were joking to the point that I could hardly breathe for 5 minutes straight)