Board Thread:Questions and Answers/@comment-90.221.228.185-20150511233505/@comment-3014077-20170629135341

Ok. I'll be the squacking parrot on this one...

16.5 is NOT canon. Reki Kawahara has said so himself. HOWEVER, the Sugary Days side stories, which ARE considered to be canon, make it very clear that while Kirito and Asuna were honeymooning on the 22nd floor, they were behaving like any other newlywed couple. In other words, yes, they did it while in SAO.

Whether they have done it AFTER breaking free from SAO is open for debate. My opinion is: In ALO, probably to likely. In the real world, possibly to probably. No, I don't have anything to back those opinions up, it's just my gut instinct.