Boyfriend(living in some other continent than europe) takes a vacation in Europe for 2 weeks and shuts off his cellphone, doesn't read his emails and is in all ways unreachable.
If, during this time, his girlfriend goes batshit crazy, cheats on him, dumps him or in any other way shows weak psychological fitness because she in some weird way didn't know about the trip...she's not worthy to be a girlfriend.
My ex-girlfriend didn't pass The Europe Test...damn she's crazy! She sold all my stuff on ebay and fucked my cousin while I was traveling Europe. I even bought her a necklace goddammit! Good thing this happened before we got engaged.