That my (ex)bf of 2 years didn't know if i was left/right-handed?

I'm right-handed.

Anyway...He just asked me one day when we were about to play football. It bugged me a little. Do you think it might be because I used to ---- him off with both? But that was when one hand got tired and he was always in the passenger seat (right side, American car) so it was awkward to use my right hand (for me it was). I found it easier leaning over and going lefty on him. But I began to think that was not the reason and he just didn't care to know me...He was the one that broke up with me too eventually.