Love? Well, for another person, it's the feeling that you never want to be away from that person, it's painful to be away from them, you trust them with your life, you feel strange but fantastic when you're with them and basically give them the access to the parts of you that only you should know about; it feels like they have complete control over you and you don't even mind. Or some other kind of soppy answer like that.
Saying something like "I love pie!" is more like you really, really enjoy something. If what I said above applies more about how you feel about delicious confectionary, I'd seek help.