She flirts and teases on her own and keeps me edged on until the next time we share her with other guys, then I get to take all my frustrations out on her
Made a point of sucking the other guy's cock more attentively, intensely and animatedly, making a lot of eye contact with me in the process, during our first mmf blowjob
With mine it's knowing eyes, a silly, slutty tone, uninhibited speech, suggestive body language, and 'unintentional' physical contact. But it's the flirting & cockteasing itself she's most interested in, rather than it leading to anything.
Knew all along but operated under the assumption that such qualities were dormant, until I stumbled upon her correspondence with other guys. When she confessed to said behavior I was quickly supportive of it, contingent on my participation.