The event had been going off without a hitch and yet something - or SOMEONE more importantly - was missing from the festivities.  Actually, the more Oliver thought about it this same person had been missing from action for longer than that.  They'd hardly hung out together since that first night in Arthur's room, eating wings and trying to forget about the fact Oliver went in for a kiss that could have been taken much more serious than intended.  He was starting to miss his friend, those snarky remarks, he'd be having a blast right now if the other had joined him - they'd be sitting there at the bar, dressed in their finest, going off about this person and that as they tried too hard to get an invitation back to someone's room.  Perhaps he'd went off on that dinner date sooner than planned while Oliver insisted on skipping out on the whole thing.  Of course Oliver would wonder who he picked to be his plus one, who wouldn't want to know which person in the Haus had Arthur's undivided attention for that fraction of time?  Oliver figured a trip up to the others room was in order, so leaving the ballroom he made the treck up the stairs to check on his friend.  Maybe it was something as simple as the tie's knot wasn't PERFECT, or maybe Oliver had been right in thinking he'd already left for the dinner portion of the night.  Either way he came to the others door and knocked, standing silently as he waited HOPING for an answer.