[Aiko]

Johnny: I usually do too, because if people act nice, they usually want something out of me, but this was different, instead of having to give things, I kept getting small gifts and all kinds of nice stuff, all that was asked for in return was my "friendship". That was the first time ever I had tried even being close to having a friendship, as Lucifer said, you can't figure bipolar people out that easily because they don't purposely hide their temper, it changes like a lightswitch, I am sure, one 100% that Amy had a nice side, and I am still sure she has it. But it was such small things that ticked her off, and suddenly you'd find yourself on the floor, not even sure what you said wrong, it could be a simple word taken out of the context and she would be about to kill you.
1 hour after she would be crying and saying she was so sorry for hurting you and she would never do it ever again.
And as it wasn't a lie on purpose, you would be believing her, and give her yet another chance until next time you landed on the floor (yes girls can be abusive too)