Why he left?

RAphrodite

Six of pence with the knight of wands reversed as the clarifing card. He was giving you what you wanted to hear. This reversed knight as a clarifier is a knight which is not noble. Maybe he was looking to have an affair, not a relationship. Perhaps not being honest with you. In and out quickly.

yes, the knight reversed as a cheater and manipulator, could very well be that. Honesty could be a thing.

Thank you for taking the time out for your interpretation
 

headincloud

Instability comes through in both the 4W rx and knight rx and it may be tied into to getting what you deserve in the 6P or what he feels you deserve, maybe he thinks he's not up to the job and under those cards he'd unlikely be, settling down wouldn't seem to be on the agenda here. Maybe he's going through a disruptive period his energy and thoughts may be all over the place, may come across as hectic and unsettled or agitated.