Woah since more than 2 people saw this I'll just add a bit more thoughts
I don't think you need to lie to someone and tell them you loved it or anything, but if you didn't like it or didn't care for it as much, save it for the next time you talk about it
We're probably all guilty of this, but for the moment right as you finish something like this with someone, it's very important that you're not negative about something they love