I'm not female, but I'll try to make some good suggestions for love songs.
Beatles - If I Fell In Love With You
Beatles - And I Love Her
Beatles - In My Life
Bee Gees - To Love Somebody
BJ Thomas - Hooked on a Feeling
Tommy James and the Shondelles - Crimson & Clover
Dan Fogleberg - Longer Than
Elton John - (not sure of the song name, but the line is "My gift is my song girl, and this one's for you"

Peter Gabriel - In Your Eyes
Paul McCartney - Maybe I'm Amazed
Foreigner - Waiting for a Girl Like You
Huey Lewis & the News - Doin it All For My Baby
Guns N' Roses - Sweet Child of Mine (not a traditional love song, but it's a good one)
Monkeys - I'm a Believer
Mr. Big - To Be With You
Simon & Garfunkel - Bridge Over Troubled Water
Smashmouth - Can't Get Enough of You Baby
The Doors - touch Me (yes it actually is a love song)
The Turtles - Happy Together
Three Dog Night - Just An Old Fashion Love Song
Some of these may seem a little different, but they all are still good songs.
Hope I helped out a little.