The Marvel Cinematic Universe started off strong in the romance department with iconic relationships such as Tony Stark and Pepper Potts, Steve Rogers and Peggy Carter, Thor and Jane Foster, and more. However, as Phase 4 of the MCU concluded, the franchise has had a dearth of romantic couples. This absence has left a void waiting to be filled by a dynamic power couple.
Source:https://www.cbr.com/fantastic-four-fixes-problem-mcu/