A "social butterfly" refers to a person who enjoys being around others, is very sociable, and easily makes friends. They tend to be outgoing and love attending social events and parties. Full definition
I hate this part seems more like a job interview, I am a passionate social butterfly who likes hanging out with friends and people who make me laugh. (privateherpesdating.com)
Also, they're great for social butterflies because you can carry your whole appetizer around on a stick with you. (honeyandbirch.com)
Every dog and situation is different but in my professional experience reactive dogs sometimes do not become social butterflies but they can learn to tolerate other dogs and different stimuli. (dog-care-centre.com)