little known secret here:
you have not actually joined yet. when you get to boot camp you will have to take the oath again and its thats the one that counts.

also you think you are the first person who a recruter lied to? and really what bearing should that have as to wether or not you want to be in the military? next what did he lie to you about? what is your MOS (job) goin to be?

my advice is just suck it up and drive on. i spent 4 years as a tanker in the army and yes there were times that it sucked but i wouldnt trade it for nothin. i met some good freinds who 13 years later are still freinds. went to some greta partys and smoked the hell outa some greta buds and the hash in germany was premo