I would first have to consult my significant other and raise my eyebrows and make gestures in the directions of the other me, me, and her.
I wouldn't call it masturbation, however. Simple test of reasoning, yes? That would be if we were the one and the same, no? We have separate bodies and minds and so we can have separate experiences. Since she could go experience different things from me which I wouldn't know about, we are separate people, thus, not masturbating. Same logic with a clone of myself, the clone can go live his own life. Would only be masturbating if we were both extensions of some sort of hivemind.
I may or may not have thought about this too much....