Break up

So my now ex broke up with me a little over a week ago. We met back in March. Kinda clicked right away. He's super sweet but I didn't wanna date him at first because he's in the Army and I knew he was only gonna be around till August. We hung out all the time, went on a 2 week road trip, met all of his friends and whatnot, even friends with some and his cousin. I had asked him multiple times if he was sure he wanted to do long distance and he always said yes babe, I want this to work. But fast forward to now, we were having a conversation about his family traditions and how he thinks id like them, and then ended the conversation with idk if I can do this anymore. I dont think its gonna work. Like what?! I don't understand. He said he just doesn't feel like he likes me as much as he used to but he kept telling me how much he missed me and wanted things to work and all. Even earlier that week. Never mentioned anything about having second thoughts about us. Idk what to even do. I feel like he met someone else. He said no. Part of me doesn't wanna accept that we broke up. It felt like such a perfect relationship. It was great and Idk how to let go of it all and accept the fact that he's not mine to call anymore.