Everyone is not a clear-cut case of something. There are no strict lines between conditions.

What I've noticed with myself having Asperger's and ADD is that I'm socially more competent than many with Asperger's, because my ADD has put me in social situations I messed up and learned from. Also I don't focus a lot on single things which is common for Asperger's, because ADD wants to do more than one thing. Having a second condition can actually make something milder. Maybe your bipolar made you better at social situations.