Fitz-Simmons

Overview:
Fitz-Simmons is the combination of Leopold Fitz and Jemma Simmons from Agents of S.H.I.E.L.D and the Marvel Cinematic Universe. These two were friends at first who annoyed each other due to the two being such good friends. Eventually however Fitz fell in love with Simmons and she reciprocated and that led to marriage and the birth of one child currently.

Pre Agents of S.H.I.E.L.D:
Jemma and Leo met at a S.H.I.E.L.D. Academy for scientists and passed with flying colours earning the top honours. They get assigned to Coulson's Team and serve under the future director of the organisation.

Agents of S.H.I.E.L.D:
They would go through many things like being betrayed, breaking up, Jemma turning into an alien then a marriage proposal. After all that however? They came through and became arguably the power couple of the Marvel Cinematic Universe.

Current Status:
Married with a child