Maybe cause your married she feels that its only a fwb. situation so she's not really wanting nothing more then friendship & sex. so she feels chatting & such is no big deal.
Ok, so you're married and wondering why your side chick isn't so into you?
She's a side chick, it's mainly fucking not an actual relationship.
She sounds like a social butterfly to me . We often meet a couple in a local nightclub and the lady partner of this other couple spends most of the night chatting to others around the club. This leaves her guy with us .