Board Thread:General Discussion/@comment-69.62.23.42-20171120205042/@comment-2001:558:6027:4:7D52:6334:8A44:8580-20171123073956

I honestly cannot tell if you are being facetious, in denial, or if you just haven't watched/read enough of the series, but it's pretty obvious that the two of them love one another. Asuna has flat out said that she's in love with him and Kirito has expressed in numerous ways (proclaiming that his life belonged to her only should be the big hint). There is nothing "platonic" about their relationship at all. Also, Kirito's been attracted to her since he met her in SAO(as Progressive shown us); they've gone out on dates while in SAO, not to mention that they got married in-game (with the implication that they slept with one another the night they expressed their feelings) and adopted a daughter later on. He's gone as far to admit that she restored his will to live after he lost his guild and that will was extinguished once she was killed by Heathcliff(after she protected him from a fatal blow). The Fairy Arc also highlights her importance to him and the lengths he will go to be with her.

Hell, Kirito has her initials ingraved on his bike and asked her to move to America with him.

And if they weren't serious, Kirito's other female friends and cousin would've taken a chance to date him but they don't because they understand that Kirito's feelings are solely for Asuna's. Even in Underworld, he spent a good deal of his time thinking about Asuna and mentally asked for her and Yui's forgiveness when he kissed the forehead of a young girl (around Yui's age) out of gratitude for her gift. They even spent 200 years in Underworld together while the rest of their friends returned to the RL.

Reki Kawahara has also claimed that they are "The Model of True Love"  and has plans to have them married in the real world at the series' conclusion.