"Up until now, Leo's ladies have been prissy, girly types," says a source. "But when he met Erin he realized he had found not only a beautiful women but a talented athlete as well! Erin loves sports and in fat was headed for a career as a basketball player when a modeling again approached her on a Miami beach seven years ago."

"Leo is also a huge basketball fan," says the source. "He has a full court at his home in L.A. and is a Lakers season ticket holder. Whenever he and Erin are together they are always doing something physical, like hiking in nearby canyons, riding their mountain bikes or playing ball together. They never run out of fun activities to do ... Leo has been a real holdout when it comes to getting married. But with a girl like Erin, who has beauty, brains and can shoot hoops, he may finally have found his future wife!"