Oh, well if he hasn't found out after so many updates he probably never will. Or will and might kill himself. Or maybe it will turn into NTRS, who knows.
Some people will probably come to reference how in the early stages of Part 1, that Fujino mentioned two endings, one of which would be Netorase. The makings of it seem like it's there, so it's possible. For example, the recent update has potentially 3 different characters that would either "comfort" Kirito when everything is exposed, but also maybe feed into the submissive netorase fetish he might develop. The 3 potential characters are Suguha, Sinon, and Liz. Liz might be confusing because she's ultimately going to end up Inoda's bitch, but I wouldn't be surprised if she tries to bang both on the side because she's twisted in her own way.
Anyways, for another example on the netorase stuff, we're currently at a point in the game where Kirito is able to unintentionally spy on Inoda and Asuna while they're locked away for 2 weeks in a hotel. That setting can probably build up to netorase.
TL;DR
There's hints it can happen, and what Kinglion said to you.