At least not all the time. You should always tell his mother that her cooking is the best, and you can’t wait for more of her famous meatloaf with the surprise center. And you should most definitely tell him he’s the biggest you’ve ever seen, whether you mean it or not. But don’t lie about things like orgasms, or you’ll never get a real one because he thinks what he’s doing is working. And don’t pretend you like something he’s doing down there when you’re really not feeling much of anything at all besides a little bored. Don’t want to hurt his feelings? Next time just tell him, “You know, that’s not my favorite thing that you do, but what I really love is when you…”
He’ll be more than happy to fill in that blank, just the way you like it.