Jessica Simpson Really, Really Hearts Tony Romo

Happier personally and professionally than she's been in a very long time, Jessica Simpson says her boyfriend Tony Romo is the "perfect guy."

"I just told [Tony Romo] today, 'You're the love of my life,'" the alleged singer and actress confessed. "I don't really ever say that to anybody."

Simpson tells People in its cover story (must be a real slow news week at People) that she co-wrote a song for her man, "You're My Sunday," which is featured on her new country album, Do You Know (out September 9).

In to show that she's, like, OMG, so serious, Jess changed her cell number and e-mail address to cut off any communication from her exes.

She'll probably keep spying on Tony Romo to make sure he's not still talking to Carrie Underwood, of course, but that's neither here nor there.

"I don't want anybody that's been in my life [before] in my life anymore," she says. "I don't even want them to have any way of contacting me."

Tony Romo hasn't done the same, but Jessica Simpson brushes it off.

"I'm not a jealous girlfriend," she says – even though Underwood claims she still hears from him, but may or may not pick up the phone.

As for her own onetime relationship with John Mayer – which began in 2006 and fizzled out in 2007 – Simpson survived its rockiness.

"I had to regain self-esteem and self-value," she says.

When it comes to relationships, Jessica Simpson says she gives her dad full control of everything heart fully and expects the same in return: "I just love, so I don't understand when people can't do exactly what I do."

No word on when she plans on getting pregnant (for real this time) with the spawn of Romo, but we bet it's not too far in the future.