the big sister of butterflies(tummy butterflies). These do not occur in relationships that are solely based off of infatuation. Iron Butterflies only occur in incredibly loving relationships, the feeling is much like that of regular butterflies but amplified by a thousand. it feels like butterflies made out of iron are flying around in your belly.
"lock my door and just stay in my room. forever baby. without a care in the world."
"you know how to read my mind! and give me crazyyy iron butterflies"