Why is it?

i think that they dont think you are going to check up on them and then they try to lie to you and dont think that you realy did what you did
so yes they are dumb

You hit it right on the head...just dumb. Thanks for the laugh!!! :o)

Or maybe it's just the guys you go out with?

Stupid is as stupid does.

Most guys are jerks...and yes you are correct, girls always find out. Or at least the smart ones. Eventually, most guys will mature, and learn this.

Why do girls pick bad boyfriends and not ones who will be good to them? Just dumb I tell you.

Guys being guys. By nature they aren't dumb. Perhaps these creatures just don't want to rake troubles thus the easy and relax attitude towards issues. Hey, we need guys around, don't we? Cheer up!

Not all are dumb. Most are though. You are right. I am certainly not!!!

I don't know, they are dumb!! Well some of them at least

"All guys care about is sex thats it" -jordan rodregaz-

It may be that they think their girlfriends are dumb too, or that they just don't care.

Not really.... Some girls are dumb too.

Guys are like that. Have to get used to them.

no dumber than girls. BTW, can't say much for you IQ if you date this "dumb" guys.

Guys are jerks, what can I say?

true.