Singer Jessica Simpson has in a tweet written about how lucky she feels to have ex-NFL star Eric Johnson in her life.Simpson, 30, whose sister Ashlee Simpson-Wentz, 25, revealed is happy with her new beau, has nothing but praise for Johnson, 30.“I met a wonderful man,” Us magazine quoted her as tweeting on September 5. “Damn I’m lucky!” she added. The Price of Beauty star then posted a photo of herself with Johnson, who she began dating nearly 12 weeks ago.