Shulker:
Sham left you a note asking you out and you read it and said yes.

End Enderman:
Bishop was still a bit bitter about things but he got over it and asked you out and you said yes.

Ender Dragon:
You got him some flowers and cake and then gave it to him as you ask him out and he looked at you "me?! Oh i mean of course you wanna go out with me im the ender Dragon!" That meant yes