AnnaLynne McCord and Kellan Lutz and Ashley Greene—who play brother and sister in the vampire flick—over New Year’s.

But McCord says she and Lutz are just pals. Or are they….

McCord, 21, and Lutz, 25, are seen here in October at the Los Angeles launch event for Blackberry’s Storm.

Prior to Twilight‘s release, Lutz starred as George Evans in five episodes of the McCord-starring hit series 90210, which premiered in September.

Yet at a party for the CW program last night, AnnaLynne talked candidly about her relationship—or lack thereof—with Kellan.

“I don’t have a boyfriend,” said the starlet. “I know it’s a funny thing. He and his costar Ashley [Greene] and I have the same agency [Innovative Artists] so we did some events in Miami together. We had a really great time.”

A great time isn’t exactly how  McCord’s Maimi jaunt with Lutz, however.

The pair spent a lot of time together during the trip. But when AnnaLynne caught her “friend” making out with another woman, she allegedly lost her marbles.

“Annalynne was speechless,” a source said. “She was noticeably upset and stormed off. Kellan followed her and was seen groveling and begging for her forgiveness and they made up.”

Well, hey, McCord never said she and Lutz aren’t friends without benefits! And with the kind of coverage these two might be offering each other, who needs Blue Cross?