Jessica Simpson cozied up to her fianc, Eric Johnson, yesterday before boarding a private plane and heading out of Mexico. The Simpson family was together in Cabo for a weekend of fun, sun, and friends. Ashlee Simpson wore a bikini on Saturday to hang out at the pool with their dad Joe, later joining boyfriend Vincent Piazza for lunch with Jessica, their mom Tina, and birthday-girl pal Nicole Richie. Jessica tweeted before ...