And these people being worried (either as an ENFP, or someone in a relationship with an ENFP) I think it comes down to communication. An ex of mine was an ENFP, and we used to work rooms together. We would go around, get stories, collect people, and by the end of the night have then doing some sort of dance choreographed by us. We had so many amazing experiences like that, where we connected with people (on different levels) and our perspectives were the most Nedelicious thing together.
That being said, he loved to push my boundaries as well. Going out together, sometimes he would launch into full on flirting (lots of physical contact, whispering, hand holding, cheek kissing) with the intent to make me jealous, or to get a reaction out of me. My only reaction would be to laugh at him and walk away.
I'm not saying all ENFP's do this, this particular one had a severe issue with getting attention from others (negative and positive) and I found out later that he had been cheating with other girls for 2/3 of the relationship. His reasoning was that I wasn't jealous enough for him, that I didn't yell or hit or cry when he did these things, that he was sad that I didn't care enough to be jealous. My reasoning: If someone wants to be with someone else, I'm not going to stop them. I only expect that they will have the decency to tell me before it happens
People are giving you guys bad names. Let's go give them stern stares.