Cancer ascendant and cancer moon should marry late in life. Early marriage most time doesn't work out or marriage life being stressful or chaotic which lead to divorces.
The reason being Saturn ruling the 7H and 8H for them and top of that scorpio being the 5H lord of romance.

Scorpio in 5H brings lot of transformation and turbulence in romance and conceiving child and martial fights ( also mars being debilitated for cancer) saturn ruling the 7H & 8H brings very secretive partners (older) early in life, who try to control or manipulate cancer.

In late 20s especially after 28 when Mars maturity happens or even 36 of age ( saturn maturity) if cancer marries late, marriage brings honest and caring partner, abundance and elevate reputation in society. Partner can be of older age or their can age gap between partners.

Some of examples of influential people with Cancer rising who married in early 20s - marilyn monroe , sidereal cancer rising ( ashlesha in vedic) who had troubled married life. Another ex is of late prime minister of india,Indira gandhi.
~Although whole chart matters.~🌸