Amy/The Doctor
Guess what Doctor. It's too late for that, because I'm already involved. And from what I hear, your way of figuring things out with River is to try and change who she is. Well, let me tell you who she is. She is my daughter, and she is the strongest person I know. But she still has insecurities, possibly bigger ones than you could even imagine. She's been through a lot, and she's handling things in the best way she knows how. She's going to be whoever she's going to be, and I'm going to let her. And furthermore, anyone who tries to change who she is has to go through me first.
I don't care who you are. But if you hurt my daughter, I will never forgive you. And that might not mean much to you now but it did once. Or it will one day. Because being with someone else is one thing, but putting her down for it is something else entirely.