Jason CastroHe stole the hearts of women across America with his guitar and dreads, but Jason Castro is now off the market.

The former 'American Idol' contestant -- who finished fourth on the seventh season of the show -- married his girlfriend Mandy Mayhall in a ceremony Saturday near his hometown of Dallas, PEOPLE reports.

The 22-year-old Castro and Mayhall announced their engagement in November. The singer allegedly proposed last Halloween in costume.