Later Simon was brought along, because of Clary's insistence, to the New York Institute by Jace and Clary.
There, he met the beautiful Isabelle Lightwood with whom Simon showed interest in, hoping to make Clary jealous.
After this, Simon and Isabelle went to Central Park to see the faerie circles.
Simon knew something was wrong and had decided to keep an eye on Luke’s house.
When he was six, he met Clary Fray and the pair became inseparable best friends.