Jay-Z, 2000 oldloves.tumblr.com / Via madamenoire.com The two supposedly dated in 2000 — and people assumed that the second verse in Jay's song "Lost Ones" was about her ...until he went on record to say it was actually about Beyoncé years later. Joshua Jackson, 2002-2003 oldloves.tumblr.com She once said of their breakup, "[Josh]would get all these calls because supposedly before we broke up, we had already broken up in the trades, in the rags or whatever." Colin Farrell, 2004 Mark Sullivan / WireImage The pair were linked — and seen looking more than chummy — on the set of Alexander. Jason Lewis, 2004-2006 Peter Kramer / Getty Images The pair lived together in Los Angeles for a few years but never got engaged (as some outlets reported). Quentin Tarantino, 2006 Ryan Miller / Getty Images Tarantino put Rosario in both Death Proof and Grindhouse — and we all know how a director can become taken with his muse... Eli Roth, 2007 Chad Buchanan/Getty Images The couple dated while filming the movie Grindhouse. Gerard Butler, 2007 Ethan Miller / Getty Images Never confirmed, but they sure seemed smoochy while doing publicity for their movie 300. Mathieu Schreyer, 2008-2011 Jason Merritt / Getty Images Dawson and the DJ were rumored to be engaged, but split in 2011. Danny Boyle, 2012-2013 Dave M. Benett / WireImage Rosario recently said of their relationship, "It's not like we announced our relationship, so it's not like we're going to announce our breakup. I love Danny. He's wonderful and we dated longer than people think we did. …I respect Danny's privacy, so it's not something we really talk about." Michael Fassbender, 2013-??? Charles Norfleet / Getty Images Rosario and Fassbender were spotted together multiple times in London over the weekend... could he be her next beau?