I think there could be. Telling somebody you love them after only knowing them for one day is odd because you haven't known them long enough to really 'know' them. I knew I liked my first from the first day I met her but I didn't fall in love with her until after we had been friends with each other for a few months and she was the one that said she loved me first.

I don't know. Young people (especially teenagers) move a lot quicker than they did when I was younger and I have heard a lot of Gen Y couples have sex on the first date so it might be possible and I might just be getting old.