INFP has secondary Ne and they act like ENFP when they let it out to play.
ENFP has secondary Fi and they act like INFP when they defend themselves with it.
incidentally, high-demand social situations can drain me too. too much Fe'ing.
Well I'm not an ENFP but.. I'm saying no to the question anyways
As a child, I was very outgoing around people I was familiar/comfortable with compared with strangers I was totally shy/quiet. When I was in school, during classes I was totally silent... but when I was out on the playground with my friends, I was totally outgoing and loud (teachers were a bit puzzled by this). As I grew older... I had to force myself & learn to be more extroverted around people(I didn't know well) to be more friendly. So now, the current friends I have... When they first got to know me, they all thought I was very extroverted and not an introvert at all because I could be friendly & talkative with everyone even if I didn't know people well (but that's just me acting & trying really hard to appear that way). This extroversion does not come naturally to me, I have to put a lot of effort into it so I get really drained after socializing for awhile. I need to go and recharge myself or I get a bit irritated and annoyed XD... The more people I have to deal with, the more drained I become (especially if it's people I don't know well)... this is why I prefer one-one, or a small group of close friends.
Even though I love people's company sometimes, can talk a lot with those I'm comfortable around, and can appear outgoing because I try to be friendly with most people.. I Know I'm not extroverted. I've never had a hard time figuring out if I was more I or E because naturally I have no problems keeping to myself(sometimes prefer it.. I can for the most part entertain myself) and usually get
drained by the presence of people instead of being
energized. Just thinking about going to a party full of strangers can make me feel dread/panicky too
. Being alone can be very peaceful and energizing to me and comfortable. I sort of seek people out when I have energy to put up with them
instead of seeking them out to get me going.
Therefore, I'm naturally like an INFP (because I am naturally very quiet and reserved) but when someone tries to get to know me, I may seem like an ENFP in how I communicate & act. So it may seem like I'm an INFP that keeps an ENFP locked inside?? which is not true... therefore ENFPs keeping an INFP locked inside probably isn't true either.
probably just very borderline I/E maybe, that could be why it's hard for them to determine.