Crawford works as a sports reporter for KDAF-TV in Dallas. The station reports that the 30-year-old player proposed to Crawford while the couple were celebrating her 24th birthday at a Dallas restaurant on Thursday.
A wedding date has not been announced.
Romo has not played since breaking his collarbone on Oct. 25. He previously dated singer Jessica Simpson.
On the TV station's website, Crawford says she has a passion for sports, loves to run, play basketball, cook and go to Cowboys games.