three people are stuck on a island two guys and a girl and the girl is dateing one of guys. but has sex with the other guy for food
lol i have no clue! ive seen it tho
i dont know what it is called but she was married to one guy and she started sleeping with the other for food and she was seriously attracted to the him. then she left her husband for him.
Possibly a movie called "Survival Island." It's pretty recent, but I'd swear there's an older one with a similar theme.
Dead Calm (1989)