Ashlee Simpson Engaged! Ashlee Simpson Pregnant?

Ashlee Simpson and Pete Wentz are tying the knot, apparently. A rep for Simpson told Us Weekly, "Yes, they are happily engaged."

Earlier yesterday, the alleged singer said, "I'm really happy!"

One possible cause for the quickie engagement - Ashlee Simpson is pregnant, or at least that's what the celebrity gossip on the street is today.

Her rep did not comment on the pregnancy rumor but referred to the website friendsorenemies.com, where the singer posted the following Wednesday:

"We know there has been a lot of speculation recently about Pete and I," Ashlee Simpson wrote, "We wanted our fans to be the first to know, because you guys are the best. Yes, we are thrilled to share that we are happily engaged."

Ashlee Simpson and Pete Wentz began dating in late 2006.

He denied it for awhile, in part because she is likely the worst singer ever and he plays in a, Fall Out Boy, that at least plays actual music. Not good for his cred.

That said, one wonders if this is even a stunt to promote her latest, terrible CD, which just dropped recently. Still, they appear happy together.

"They are ecstatic and can't wait to be man and wife," a source said. "They will be getting married before the end of the year."

Congratulations to the happy couple!

Maybe they can get a two-for-one discount on a venue with another knocked-up, wedding-planning couple, Jamie Lynn Spears and Casey Aldridge!