She oughta know

What happens when your fiance dumps you, only to propose to Scarlett Johansson? Alanis Morissette oughta know. The Canadian pop-rocker, who initially won us over with "Jagged Little Pill," supposedly based her latest album, "Flavors of Entanglement," on her failed relationship with actor Ryan Reynolds, who is now with Scarlett. And you thought your break-up was a bad one. Morissette is performing at 5 p.m. today at Newbury Comics in Faneuil Hall, followed by a show at the Orpheum. 7:30 p.m. $35 to $55. Orpheum Theatre, 1 Hamilton Place, 617-931-2000. www.ticketmaster.com [M.G.]