Here's a pair of issues of DC's Young Love that focuses on a couple, imprisoned by love!
Love Behind Bars
Love Behind Bars II
Stephie runs away when Vic gets out of prison, heads to New York City, has her wallet stolen by an old man on the bus, is taken advantage of by an older couple, who take her to a house of prostitution pretending to be a halfway house, where she was about to be taken by a client, but saved as the police raid, though she is arrested with the other street girls.
In prison, Stephie is surprised, as Vic arrives to take her home, who still loves her (even if she inexplicably went from a redhead to a brunette!).