The couple called off their engagement according to the mag, but a source said they are "still really close."
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"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.