As both Izuku and Momo have been ignored by family and friends they left all together and soon they started to date as their ex lover started dating each other as they forgot them and soon they both find themselves together as lovers and soon they became the married couple before them years after they left ofc they had their ups and downs but it was never at the point of breaking up as they both need each other which made them live each other to begin with.
Ship
Izuku x Momo