One of the first films even partially dealing openly with the idea of sex between an able-bodied person and a disabled one. Other films dealing with disability and romance had indirectly implied it or avoided it altogether (such as in The Best Years of Our Lives (1946)).
Capt. Bob Hyde: [Yelling at Sally after discovering her infidelity]
What I'm saying is! I don't belong in this house, and they say I don't belong over there!
Luke Martin: [being interviewed by a television news crew after chaining himself to a Marines Recruitment Facility]
The reason why I'm here is because a buddy of mine who'd been in 'Nam took his own life today. This is kind of a funeral service. And I'm here because I'm trying to tell people, man, if we want to commit suicide, we have plenty of reasons to do it right here at home. We don't have to go to Vietnam to find reasons to kill ourselves. I just don't think we should be over there.