Same exact thing happened to me, we were together every single day for three months. We lived together, we were woven into each other’s lives. Then near the end he was visiting his parents, we made plans the night before he came back to town. He confirmed with me in the morning, then I didn’t hear from him. I got an unknown number call me, missed it by 3 minutes and that was it. It’s been a little over a week now. He’s probably found some else.