Talk:Sans/@comment-26447320-20170102082439/@comment-26814804-20170108080726

That's very true. I'm not claiming it's CANON. I'm just claiming GOOD GOD THEY'RE PERFECT.

Either way, Sans doesn't seem to have any reason to brush off the fact that he knows Alphys. The three most logical answers are that either they had a relationship long ago, it had something to do with Gaster, or that they were just friends. Occam's razor dictates that the last is probably true, but at the same time, it doesn't explain why Sans seems awkward about it.