Who will I marry?

"When I'm married..." This is a frequent statement at our house by our 5 year old daughter.  Usually it's accompanied by a statement about how when she and her 4 year old brother are married, and what their children will be named.  I've tried several times to explain to her that she can't marry her brother but she doesn't quite understand why.  I've had to just tell her it's because it's against the law.  I've also tried to explain to her that she can't marry her Dad, because he's already married to me. One time I tried to explain this by asking if I could be married to one of my brothers.  She thought that was pretty funny and then stated that she didn't want to marry my brothers either.

We tried to go through a list of who she or her brother could marry.  Apparently the thought of marrying any of her friends was pretty funny.  So, we concluded that she would probably marry someone that she hadn't met yet.  It's important to have these things figured out at the ripe old age of 5.  Gotta start planning that wedding now I guess!