Critical reception
Untamed Heart received mixed reviews and has a 58% rating on Rotten Tomatoes based on 26 reviews. On Metacritic, the film has a 59 out of 100 from 26 critics.
In a three-star review, film critic Roger Ebert wrote that the film was "kind of sweet and kind of goofy, and works because its heart is in the right place". Hal Hinson of The Washington Post said that the film "is hopelessly syrupy, preposterous and more than a little bit lame, but, still, somehow it got to me". Vincent Canby of The New York Times said the film "is to the mind what freshly discarded chewing gum is to the sole of a shoe: an irritant that slows movement without any real danger of stopping it".
Many critics opined that the actors saved the film from overwrought sentimentality, leaden dialogue and implausible plotting. Much of the praise in particular went to Marisa Tomei's performance. Owen Gleiberman of Entertainment Weekly gave the film a "B−" rating and wrote, "if Untamed Heart is often too precious for words, there’s one thing in it that feels miraculously fresh…Marisa Tomei, who follows up her rollicking caricature of a streetwise Italian dish in My Cousin Vinny by proving that she’s a major actress…rescues her role through sheer eagerness. She gazes at Slater with such ardor and delight that he’s transformed, and so is the audience."
Peter Rainer of the Los Angeles Times said Tomei "pulls you into Caroline’s spunky despair without ever condescending to the character". In his review for The New Yorker, Anthony Lane praised Tomei for bringing "startling high spirits to a dullish role. She snatches moments of happiness out of the air and shares them out to anyone who's around". Hinson added, “when Slater and Tomei are alone together, their exchanges are so shyly affectionate, so sweet, that they soften the hardest hearts".
Of Slater, Rainer said he "does an impressive job of burying most of his Christian Slater-isms. Gone are the wily Jack Nicholson-ish line readings and smart-aleck scruffiness", while Ebert wrote he "projects the right note of mystery and doomed romance". Rolling Stone's Peter Travers wrote, "The Rain Man-Dying Young elements in Tom Sierchio's script are pitfalls that Slater dodges with a wonderfully appealing performance."
Mike Clark, in his review for USA Today, wrote, "Director Tony Bill (My Bodyguard) is adept both in the yarn's meticulous buildup and in his handling of the actors". Travers concluded "it's Tomei and [Rosie] Perez who give Untamed Heart its buoyant wit. Their friendship could have sustained an entire movie".