Gwen Harrison (Catherine Zeta-Jones) and Eddie Thomas (John Cusack) are America's Sweethearts. Having co-starred as each other's love interest in several very successful romantic films, the celebrities are actually married in real life.
If you are looking for a romance with real heart, check out Return to Me. For a look at the relationship behind some real life celebrities, try Shadowlands, based on the true love story of the author C.S. Lewis.