I’m either very lucky or you’re meeting the wrong women. In my experiences with 2 women in a three way, ass to mouth is kind of a regular thing, honestly, and when I’m in a threesome it usually happens. Women who engage in threesomes with another woman typically want to leverage the opportunity to perform sexual acts they fetishize and desire, and because a male is present, legitimizes any bisexual behavior and fetishes. Most people, myself included, feel more ‘normal’ in engaging in sex with a member of the same gender when the opposite gender is present and participating.