<human>: My partner and I have been seeing each other for a year and have been dating for 8 months. We have previously ghosted over things such as how many partners etc we've had etc etc and when he has asked me questions as to whether I've tried things, I've been up front and told him whether I have or not as well as any unusual kinks I may have.

Recently, we were talking about threesomes and whether we would want to indulge in one in the future. I am curious about them, both MMF as well as FFM and he told me that he felt the same way which was great. He then asked me if I had ever been in one and I told him straight up that I hadn't but that it had been a fantasy of mine. I asked him the same question and he responded with "Lol that's a story for a later date :) " I left it alone at the time but I am burning with curiosity as well as feeling like its slightly unfair that I have been completely up front with him and he wasn't willing to do the same. Am I being unreasonable? When, if at all, should I ask him about this again? He is the kind of guy who will not bring things up unless asked and I would like to know if possible.

Can you provide a brief overview of the text?
<bot>: BF asked me if I have ever had a threesome, I told him. I asked him the same and he wouldn't answer. Am I being unreasonable by wanting to know?