Most Helpful Guy
Yes if your actions aren't showing love or if you are saying it in a hope to hold on or make him love you. This is even more so if he isn't saying it back.
Try saying other things, compliment him in other ways, compliment his character, tell him how protected he makes you feel, or how much you feel relaxed in his company. Tlak to him and be open with him. If you are still worried just ask him at an innocent relaxed moment... "I read an article that said if you say I love you too much then it can become devalued, what do you think?"
Most Helpful Girl
No. At least if you really do love him then no. If you do love him and say it all the time amd the words just sound so plain, it's probably because you're just really used to the words and then they sound funny. Like when you say a word so many times it sounds abnormal. But if you start losing the love and it you feel a big shift in feelings with loss of attraction and boredom even, then it's a POSSIBILITY that you have lost your love for this person. Just a guess.