1 definition by Fanficista

Fitzsimmoning is the act of two people arguing with each other in the most romantic and in-sync way possible.

The Agents of SHIELD fanbase frequently uses this phrase, for referring to the frequent bantering and adorable bickering between Leopold Fitz and Jemma Simmons, one of the cutest couples in television history
Person A and Person B are back at their regular arguing session without realizing how they are in love with each other and are obliviously flirting. Gosh, they are fitzsimmoning!
by Fanficista August 23, 2022
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