And that happens to me A LOT!!!!!!!!!!!

not really, if I like a movie I'm ready to accept even its flaws and at least say "yes, I know this or that is bad but I still like it anyways" =p

I think is pretty imature to get mad whenever someone doesnt like something someone loves. I had a buddy that always kept dissing my one of my favorite bands and I wasnt bothered by it. Not everybody will like what you love

But I always try to defend the underrated movies that everybody think are "bad". If a movie that i like happens to be very popular I don't mind the criticisms, but the underrated ones need more attention.

Well, it depends. Sometimes I do and sometimes I don't. I think it depends on how the person words his/her criticism.