<human>: Hi, after reading a lot of posts here I decided to ask your opinion on an issue that is keeping me awake, my girlfriend and I have been in a long time relationship (4y), but since around a year and a half or so, she started asking me about other girls while on bed, like if I liked someone, what I would do it to her, what would excite me about her (mind you, not an specific girl but mostly if there is someone, anyone that interested me).

Honestly at first this really make me really doubtful, tried to keep with the conversations but at some point it seemed mor like an interrogatory than a sex conversation or fantasy. 

Not long ago I tried to talk to her about if she had any fantasies about being with someone else or a threesome (male or female) and she got a bit defensive and I really felt she deflected the questions.

Now I'm a bit lost, didn't touch the subject again, but we hadn't have sex in a couple of weeks, she doesn't seem that much interested to be honest.

Can you provide a brief overview of the text?
<bot>: my girlfriend is asking me about other girls and me during sex, sometimes feels like an interrogatory, don't know what to do make of it.