Even if you're pop culture obsessed, it's impossible to remember every celeb coupling. As a refresher, we present former flames who might make you say, "I totally forgot they dated!" Starting with Ryan Reynolds, who before tying the knot with Scarlett Johansson and Blake Lively, was engaged to Alanis Morissette.
The twosome, at the MTV Movie Awards in 2003, ended their engagement in 2007.