You say you love me, but I hesitate to reply that I love you back, because you don’t know love like I know it. You just like to hear someone say they love you without knowing the true meaning of love.
You say you love, but with conditions, and expectations. That is not love, but attachment and it can only result in disappointment. You say you love someone but you expect them to do something or behave in a certain way in regards to you because you love them. What happens if the expectations are not met? You end up saying things like “you broke my heart”, and “I can never love again” but you were never even in love in the first place. Just an extended infatuation.
So when I hesitate to reply “I love you too”, it’s not because I don’t love you, it’s because I don’t think love means the same thing to both of us.