NO! Why would one spare one's feelings and tell them they love them if that is not how they feel? In reality if you tell them you love them, you are actually hurting them in the end. Because, what if you tell them "i love you too" and then you start to realize, hey this is not the right person for me! Then, after you got their hopes up when they thought they could trust you and pour their heart out to you their heart is crushed. Only tell someone you love them when you truly mean it with all your heart, and it will mean more to the both of you!