Leonardo DiCaprio and his supermodel girlfriend Erin Heatherton, who’ve been dating since late December, are still going very strong. A spy spotted the couple looking affectionate and cozy and giving a standing ovation for a performance by up-andcoming rock ’n’ roll guitarist Gary Clark Jr. during a private party thrown by Warner execs Lyor Cohen and Todd Moskowitz at the Darby on Tuesday night. DiCaprio took a photo with a fan and was seen giving Pharrell Williams a huge hug. Reps for DiCaprio and Heatherton had no comment. Zoe Saldana, Estelle, Q-Tip, Questlove, Swizz Beatz and Darby owners Richie Akiva and Ronnie Madra also attended.