What are some good love quote that you've heard of?

So I’m starting to think that I need some input so I think without actually talking with everyone on here. What is the best “love” quotes….Er…what are some good ones I mean to say? The only “love” quote I know right now is that “It’s easy to fall in love, but hard to find someone catch you” It’s all true. But what are some other ones?....I’m only wanting to know this info since sometimes quotes can give me a better understanding on things and if it’s sorta based on love it will give me a little understanding on a relationship or so. It’s sort of the same with the haikus, just I use them for a different purpose. So what are some good quotes?