You're missing the point. When you're in love, saying "I love you" isn't an obligation. It's something you say because you mean it. Because you WANT to say it. You shouldn't say it at all if you don't mean it. And if you do mean it, it makes absolutely no sense that you would only say it ONCE. That really doesn't make sense.
Also, everyone stop telling each other to stfu. Ok. Thanks.