What are some good chick flicks?

I recently watched 500 days of summer (LOVED that movie so much I can't even explain, but i do not like the end) juno, which i thought was a pretty good movie, and 10 things i hate about you so i am kind of in a mood for movies like that... anyone know some other good movies? I also like

titanic,

when in rome,

new years eve,

valentines day,

any movie with joseph gordon levitt or leonardo dicaprio because i think they both are amazing actors

the notebook

the lucky one

the vow

and stuff like that. I have already seen all twilight movies which are pretty good, except the newest one which i will watch soon because i have not seen it yet.so don't say those please, thanks. Also please don't type a list with like a million movies, or if you do tell me which ones you really suggest because really long lists kind of overwhelm me because i can never decide which movie to watch first hahaha. Thanks so much in advance!!!!

by the way, i am 14 (almost 15!!) if that helps:)