KSH,
I think your boyfriend meant you would look younger by firming up and stuff; he probably didn't think it would actually change your wrinkles.

and the guy who misjudged your age probably didn't even notice your wrinkles.. A lot of people (myself included) are pretty bad at guessing age.
So I do what a lot of folks do; i figure out how old someone is and then subtract 10 years so if they ask i will at least seem complementary; but i have NO IDEA!
even with little kids!