My husband just told me.........

Today after having sex my husband mentioned that he hasn't had that freashly "F***" look in years. We have been married for 5 yrs in july and have 4 small children. I thought he has always enjoyed me because he keeps coming back for more. Now he has put this out there and I am completely crushed. I don't know what to do if I did I wouldn't be online asking for adivce from strangers. Anyway got any thing for me?