[NSFW!] If you have a threesome with a live woman and an artificial man-made silicone inanimate partner at the same time, is it de facto cheating?

[NSFW!] One thing I can say of Fluther is that one question can give birth to another. Off this question, I wondered, a man found a woman that agreed to bring one of these ultra expensive but very real-like dolls [NSFW!! Link, site used in original question, adults only! into their bedroom play time if that would count as de facto cheating on his part? Would it just be de facto cheating if he did the doll while his woman was away or downstairs watching a DVD? If he was with his woman, but had a he/she doll [NSWF!! link] and sat on the doll buggered himself with the doll’s dumbstick while having his partner stand before him for some oral action, or sitting in his lap for a ride on his dumbstick, would that make him de facto bi sexual? Or having a homosexual experience with a doll don’t count? And before some smart-aleck think I am talking about myself, NO I AM NOT, just so we are clear [NSFW!]