Relationship status on Facebook?

[ilovepiink]

Hi, so my relationship status on facebook says "In a relationship with *insert boyfriend's name here* "and when I click on this girl's facebook, she's "in an open relationship" with my boyfriend as well. WHAT? What's going on? I refreshed the page a couple of times, it still didn't changed. Me and my best friend also used her facebook to check if that girl's relationship status on facebook says that she's in an open relationship with my boyfriend and yes she really is. Is that even possible? How? I don't understand. It seems like it's not a big deal but really...
No, my boyfriend's page says he's in a relationship with me but when I click on the girl's profile it says that she's in an open relationship with him.
Btw, I'm "in a relationship" with my boyfriend, not "in an open relationship" and Idk what's going on but it hurts a bit.