I Married a Monster From Outer Space

This was pretty offbeat for fifties Sci-Fi: male aliens, whose own females have died out, need to figure out a way to mate with Earthwomen and continue the line.  Yow!
The title and description sound ultra-cheesy, but it's a fairly serious effort,
with shades of Invasion of the Body Snatchers (1956). My favorite scene is when a few of the disguised aliens sit in a bar trying to figure the next step in their quiet invasion and the bartender picks a fight over their lack of enthusiasm for his liquor. There are some eerie thrills, including the conclusion, where a minor battle is waged after the jig is up.

This should be remade as a classy 'A'-list Sci-Fi thriller, stressing the awkward & strange relationship between wife and alien husband. BoG's Score: 7 out of 10
Oh, I guess that's been done to some degree - there was a Sci-Fi film called The Astronaut's Wife, starring Johnny Depp & Charlize Theron, released a few years ago.

Tom Tryon, the lead, became a writer later of such novels as 'The Other'
(horror), after becoming dissatisfied with the Hollywood career (notably
after his experience on The Cardinal in '63). The Other was itself made
into a strange horror/thriller film in the early seventies. By all accounts,
Tryon was gay, a surprise to me considering his rugged, 6' 3" looks &
build. I suppose it's not that great of a shock nowadays, but I relate to
my parents now as to when they found out that Rock Hudson was gay.