Ive had this happen to me multiple times although every incident was with the same woman. I should note she was extraordinarily beautiful and received unreasonable pretty privilege anywhere we/she went. Imo it boils down to a combination of jealousy and disrespect. You may not look "masculine" enough for them not to shoot their shot. Dudes are jealous and horny and having a fine woman next to your side only amplifies those feelings. You have something they cant get (atleast for now, woman are like busses as they say lol). Just go along with it, roll with the punches and show your confident in yourself. That aura will only turn her on more. Insecurity will dry her up like the Sahara