Hey Penny,
It sounds like you got a pretty raw deal

but it isn't the end of the world. Time heals wounds. It sounds like he's got a problem with insecurity, otherwise, why would he feel the need to 'kiss & tell?'
Move on, and if anyone is bold enough to say anything to you,(which I doubt), just shrug it off and don't make the same mistake he did by talking about it. The upside of it is - you're starting a new year,

and there's other guys that don't do things like he did.
Best of luck to ya,
leppi