What does it mean when a guy say he is just a complicated guy?

It could mean that he's deep, mysterious, and/or moody, or he might just want you to believe that he is those things. It might also mean that he doesn't know what he wants, or that he tends to confuse girls in relationships. Basically, he's sending you a warning message that a relationship with him might take more work than you'd expect.

Ahhhhh,

I may anger some guys here, but when a guy says he's complicated, he's either hiding something or he's a drama queen.

Either way he sucks, get rid of him.

I agree with evilsheepempire. I've said that to women many times. Yeah, it means exactly what he said it does. Also, when I say it to a girl, it normally means that I like her and want her to want to take the time to get to know me as well, if she's interested. It also means that I don't even totally know myself either because I'm still trying to figure myself out too! It also means that there's so much of me to get to know that it may take her a life time to figure me out or get to know me - kind of like an extremely difficult puzzle, riddle or enigma that gives you just enough satisfaction that you keep trying but you could spend a lifetime figuring it out and not be bored! Does this help?

It means that he cannot put into words how to explain a facet of himself, or a personality trait.

It also could mean that he does not want you to know a certain side of him, since he himself doesn't like to confront it.

It means, that in order to tell you about the "complication", you would have to get to know him over a long period of time, and most likely meet face to face since about 80% of communication is non-verbal.

That means that he doesn't want you to know something about him are he can put himself into words to describe himself s0o0o0 then he really doesn't know him self very well.

it probably just means that there is something he doesn't want you to know about so he says he's "complicated" so he doesn't have to tell you.