So I said in Apple Slice's reference that Apple Jack took some time to accept Slice's sexuality. She still loved him and all, but she would always change the subject whenever Slice tried to bring it up with her. Over the years she saw how much she was hurting him and asked Twilight to help educate her.
I know this is a serious subject and I just want to say to anyone who is experiencing anything like this that you are loved. I love you, the communities love you.