1) She is not! And you’re a horrible little monster for spreading rumors!

2) I didn’t have a reason to stop.

3) I guess they don’t like us together.

4) …

I’d like to just give a joke answer, but I know if I try it’ll just get turned around on me.

5) Of course he was nervous! He’d been up for thirty hours worrying about the possibility of complications!

I assume you’d be surprised to know that most earth ponies have recessive unicorn and/or pegasus genes by this point. Equestria was founded over a thousand years ago!