Can you ever say I Love You too much?

My husband says that I say I love you too much. We have been married 10 years and have a two beautiful kids. We have a good relationship but when I asked him why he doesn’t say I love you very much anymore he says that I should know that he loves me and he shouldn’t have to tell me all the time. It’s just weird. I do know he loves me, but would it kill him to say it once in a while?