Board Thread:General Discussion/@comment-27907368-20160323193924/@comment-27620479-20160704194720

Raythornclaw wrote: Isthereaplace wrote: Also, Alphys isn't lesbian. She has a crush on Asgore as well, so she is bisexual at the least. Thats not Canon It pretty much is. There are two points of confirmation for it in the game:

First, If you choose "Asgore" on the quiz, Mettaton marks it as correct, and tells details of Alphys' crush on him. Unlike when you choose "the human", which Mettaton marks as only correct in a certain interpretation.

Second, before the fight with Asriel, Alphys has a remark that "S-sometimes you've just got to, uh... S-stop going after furry boss monsters". She clearly doesn't have any idea who Toriel is, and there aren't many furry boss monsters in the game.

Also, Alphys has no romantic feelings for Frisk. If Mettaton's words aren't convincing enough, she explicitly tells them that her intention was to go on a pretend date, and not a real one. That kind of undermines using it as evidence to determine Frisk's gender.