It's a girl? Your chances are that she's going to cry for hours straight, then she'll be your friend again unknowing that she's plotting her revenge. Over the course of sixteen years, she's going to constantly remind you about what you did wrong and subtly let you know how she feels. After a long time, she will strike when you least expect it, stabbing you in the neck with an enchanted dagger.
Then she will precede to suck out your joy, hope and personality all at once, leaving you as a husband.