Changing the tempo a little bit but still in line with Zacs theory that there is a "crack in your frame." Usually when a woman mentions another guy in passing, in a nonchalant sort of way, it can mean a few things, but is probably along the lines of the situation I'll outline below:
Friends of mine who are girls have done this to rev guys up, here's an explanation text from my friend Maria who actually just texted this to me earlier today while I was out
Her "Hey Richard =) As always, I need your advice on something =/"
Me "As ALWAYS Maria, fine lol, I need to start charging you for this"
Her"Oooohhh please no! I don't work enough for that lol"
Me "Definitely! So what's the problem?"
Her "Well, I have guy problems... Remember that nigga Brian with dreads that I liked? Well him n I were talking or whatever, and you know how his whole team been trying to fuck with me? I was talking to him anyway, and was mentioning his friends whether they were by his crib or not, and he was getting mad n asking me why I wanted to know and sht like that. It seems like ever since I talked to him he been trying to fuck with me even more, this niggas getting too clingy !!! What can I do =(?
A little out of context at first, but, Maria generally doesn't do this on accident, for her, when she mentions other guys, it gets the guy she actually wants moving for her, and it's usually too an extreme which ends up turning her off. So, if she's mentioning other guys around you and knows you are interested, then she's probably testing how you handle it, whether you qualify yourself, and try to put the other guys down and assert yourself, or you briskly and smoothly handle it in a socially dominant manner.