The guy you meet online dating who after only one date sends way too many amorous text messages and emails with animated butterfly emoticons. If allowed to continue, he will most definitely become a bonafide stalker.
Guy: Hey, how was your date last night?

Girl: OMG! He turned out to be a total butterfly boy! He texted me that he had "butterflies in his stomach" and then sent me an email with animated butterfly emoticons! Now he wants to take me to the butterfly exhibit at the Museum of Science! Help! Make it stop!

Guy: You tell him to take his arsenal of butterfly emoticons and shove them right up his a$$!!!
by JuliaGulia September 2, 2005
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A male who is of the LGBTQ+ variety and is considerably weak.
That James Charles guy is a realbutterfly boy
by Arseholeaids March 27, 2020
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Someone who is beautiful, mesmerizing, and amazing that just unexpectedly comes into your life. You’ll probably talk and text a bit exchanging inspirations and ideas for a while and they will just happily fly around your head as you think of them and the knowledge or new ideas they have presented to you.

Then out of nowhere they just flutter away but you’ll still be in a little daze for a bit thinking did that they actually happen and you’ll be in this state for a few days or even weeks after the interactions.

Not to be confused with a f**k boy, as a Butterfly Boy has a more delicate entrance and exit to your interactions. Not a Soft Boi either as the interactions were never to get in your pants, maybe nothing more than a little hand touch or a little kiss of the lips.

Like a little Butterly landing on you, fluttering its wings a few times, and then off away it floats.
A: "Ahh It's just annoying and a shame that I will never really be anything more to them 😢"
B: "they are just a butterfly boy/girl 🦋"
A: "It was short but sweet"
B: "Off they fly 👋"
by Kung_Fu_Croissant November 15, 2020
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