Loads of them, and everytime I hear an old one, I think that could be a fave, but the one I always think of when anyone asks this question is Elton John's 'Your Song' - simple, but says it all.
"Need Your Love So Bad" by Fleetwood Mac. The first record my husband bought me when we first met - being a huge blues fan this changed my opinion of him!
If I could have another 2, they would be 'I Won't Last a Day Without You' by The Carpenters, and 'You're the Inspiration' by Chicago. Then again, there's.........! :-)