Lindsay Lohan has given up on 20-something lovers and has her sights set on film-maker Brett Ratner, according to US tabloid reports. The actress/singer and the Rush Hour director were spotted enjoying each other's company at a recent party at Los Angeles' Dime club. One reveller tells American magazine Life + Style, "They were all over each other, touching and caressing." At 37, Ratner, who was most recently dating tennis ace Serena Williams, is almost twice 19-year-old Lohan's age. After splitting from Wilmer Valderrama, Lohan has been romantically linked with a string of hunky young stars, including Jared Leto.