Depending on your area, there are often local BDSM communities of various sizes, makeups, and purpose. Often groups will have anything from casual get-togethers to some pretty over-the-top full-blown play parties, depending on the group, the event, etc.

Unfortunately it can often be difficult to find some of these local groups, as they can be small, and/or only be "advertised" in their own yahoo group or something like that.

I would -think- that in MD, being close to DC, there would be some things going on. If you don't have any luck looking online for local groups, then you could try this: on more than one occasion when moving to a new area where I was not familiar with the BDSM scene and didn't have luck finding info on local groups online I found that I could get some good info by talking to local GLBT groups. The two communities have pretty close ties in a lot of places. You could also try asking at the local (or nearest thing to local) fetish-wear/leather shop.

OH...and welcome to the board

edit: and make sure to leave solid, verified identification information for this guy -with a friend- before you go next time, and make sure this guy knows that a friend of yours does have the info