The couple called off their engagement according to the mag, but a source said they are "still really close."
"They both feel good about it. They're definitely still friends," the source said.
According to the source, the pair called it quits after an argument.
"Owen had a birthday party this past Sunday, and everything seemed fine. Sometime after, they got into a fight and decided to reevaluate things. [Then] the engagement was off," the source said.
Christina and Owen met on the set of upcoming Renaissance Faire romantic comedy "All's Faire In Love," where they play a Ren-Faire newcomer and a member of the theater troupe, respectively. The couple announced their engagement in March.