1)Marriage acceptance
2)There first kiss (in her room)
3)The first night he stayed with her
4)The Prom (Edwards choice)
5)Reunion after she's saves him in Italy
6)Flight home from Italy (didn't show in movie)
7)Times in there Meadow
8)When Bella realizes what he is & accepts it in the forest (and so the lion fell in love with the lamb...)
9)When he admitts that he loves her too in the first Twilight book.
10)Meeting his family & feeling welcome by mostly everyone.

This is what I would guess as there 10 best nights what are your versions of there 10 best nights?
(Only in the first 3 books & movies, no Breaking Dawn moments)