Board Thread:Questions and Answers/@comment-27801808-20160215082214/@comment-5956954-20160219031312

i don't think you did.

hanging/dating with him is going into his room, talking to him, and actually engaging the date. you should have papyrus' phone number because of this. then he will call undyne and organize a meeting.

if undyne's house is locked, you probably didn't do the date properly. try going back into the house again and into papyrus' room.