Jessica Simpson "in love" with Tony Romo

Jessica Simpson says she's "in love" with her new beau Tony Romo -- so much so, she's written a song for him: "Back in My Old Boots."

"He reintroduced me to myself," Simpson says of Romo, who she recently described as her "future husband". "I thought that I had to be deeper, more profound and more artsy. You change with the guys you date.

"Tony taught me that because he loves me [as me]. He made me feel comfortable [being myself] again," she adds.

Jessica was quick to dismiss critics who said her showing up at one of the football games that he lost last year jinxed his career

"Everybody takes everything out on me! But that was ludicrous," she tells the June issue of Glamour magazine. "I don't understand why they think that I would be a distraction to Tony. Do they really think he can see way far up in that box? No."

Jessica says she first laid eyes on the Dallas Cowboys quarterback while she was going through her divorce with Nick Lachey.

"My family and I were watching a Cowboys game ... and — Tony would die if I told you this — but [on TV there was a story] about him," she says. "They said his celebrity dream crush was Jessica Simpson.

"My family was like, 'Did you just hear that?'" she goes on. "His picture came up, and I'm like, 'He's really cute.' Then I heard [that I was his crush], and I'm like, 'Oh my gosh!'"

They met a year-and-a-half later after a pal introduced Tony to her dad, Joe Simpson.

After Tony spotted Jessica and Joe at the Country Music Awards last November, "Tony e-mailed my dad, 'Cute date,'" Simpson reveals.

"My dad was like, 'Look what Tony said,' Simpson says. "I said, 'Give him my e-mail address. We'll see if he's good with words.' Then he e-mailed me, and we flirted over e-mail and on the phone."