Rent Fools Rush In (1997)

Alex Whitman (Matthew Perry) is a straight-laced corporate type from Manhattan: Isabel Fuentes (Salma Hayek), is a fiery Mexican-American. When the two meet in has Vegas some serious chemistry brings them together for one night. But Alex doesn't see Isabel again until three months later, when he learns that she is pregnant. On a whim and a prayer, he proposes. However, there's more to marriage than a Vegas chapel and an Elvis impersonator, as Alex and Isabel soon learn...