Sounds like he is indeed going through his first breeding season. You should be proud! Your little boy is growing up! Next he'll start talking back to you, slamming doors, and running away! :laugh:
Anyway, he is just old enough to be starting his first season. Just leave him alone more than you normally would and he'll get over himself. You can also give some way to relieve himself, such as a Luv Sock or something (read about it
here.)
It seems real bad, but just think of what it's like for those of us with a male AND female iguana. :unsure:
Heather