I tend to identify myself as a 'double' (pair?) not really a mutliple I guess

'Multiple' by definition means anything more than one, so you definately fit. Systems don't have to be big. They can just have two or three members or can number anything right up to into the thousands. elenbarathi who posted above is part of a trio, so you're by no means the only small-numbers system on the board.

Welcome!