one of my present friends even lied to me and another friend of mine when we started hanging out, back then he was 30 and only a couple of years later i found out from another source he was actually 7 years older lol, little fucker had us fooled for 2 years 
needles to say he lies to women constantly about his age but seriously dude will turn 40 this year and could pass even as a 25 year old
LOL i wasn't 100 % honest with my age either to my lady back when i was 30+
Whenever she introduced me to friends and family/relatives, i said i was in my 30s (a line from the Office), alluding to that i could be 31, when in reality i was closing in on 40!
I had a serious problem with my age back then (and that i was getting older). I just couldnt accept that i was reaching 40 and was lying to her and myself in a way i guess.
I am much more honest in my current relationship though, i learned my lesson! Maybe you do grow wiser when you get older after all!