Thoes Three Words

Wondering why when people say "i love you" the other person is complelled to say it in return. If two people are in a relationship and one says to the other "i love you" and the other does not say it back, does that mean that that person doesn't love the other? She believes that you should not have to explain to another your feelings for them. If you love someone, then you know. If someone loves you back, than you know that as well and should not have to be reminded. Pety arguments about such awonderful statement should not have to exist. When two people love eachother than they love eachother. End of story.