Frenemies

I took a trip with friends couple weeks ago. It was a good trip. I went with people that were more like hang out buddies than friends. Being just buddies, this trip really challenged my patience. I know that I am not perfect because I know that I can be a pain in-you- know-where.
But, overall, the trip was a success.
So, there was one time that we got into talking while waiting for the sunset. We talked about frenemies.
After talking to this person, I got a little scared because he has so many masks to wear. He actually said that when he is in a new place, he has to wear his friendly mask and I always thought that he is a sincere and nice person and he has frenemies too!
Makes me wonder if he is a nice person and makes me curious his true personality.