Why you guys act like this?

I've been getting to know this Korean guy online for a while now. He's 25 and works in a military capacity as an officer. We've been chatting since the end of January and even had a few phone calls. It's been going pretty well overall, but recently, there's been a bit of a shift in our conversations. We talked on the phone earlier, and I suggested we FaceTime sometime soon. He seemed open to the idea at first, mentioning he had some training to attend to but that we could do it afterward. However, when the time came, he kept postponing it and didn't bring it up again. When I asked him about FaceTime, he seemed hesitant and even tried to steer the conversation towards more intimate topics. He started asking about my sexual history, which made me uncomfortable, especially considering we're still getting to know each other. I tried to steer the conversation away from that and asked about his past relationships instead. He mentioned his last girlfriend was two years ago, but then he seemed eager to change the subject again. I felt a bit disappointed by the turn our conversation took. I was hoping we could move forward and develop a deeper connection, but it seems like he's more interested in discussing sexual topics rather than getting to know me on a personal level. Since then, our conversations have become less frequent, and he hasn't brought up the topic of sexuality again. I'm not sure how to proceed from here. I still want to keep talking to him because I enjoy our conversations, but I'm not sure if he's interested in pursuing a meaningful relationship. We live quite far apart, with me in Istanbul and him near Seoul, which adds another layer of complexity to the situation. I'm not sure if a long-distance relationship would even be feasible or if he's interested in that kind of commitment. I would love to continue talking to him. But I don't know how to achieve this. Also I'm not too sure if this is healthy? Any advice on how to proceed would be greatly appreciated.

Why you guys act like this?
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