Mixed signals: One moment he makes me feel like a princess, then ignores me

4 months ago, I met a guy who works in a restaurant in my town. Every time I went there, I saw him looking at me and talking about me to his colleagues. One month ago he came up with a little note while he brought my food. “I think you’re really pretty, want to go out?” I said yes and that same evening, we went for a drink in the bar. My mom was at the same place (by accident) and came up to us. She asked him ‘What are your intentions with my daughter’ and he said he was a serious guy looking for a serious girl. Later that night, he said he was going home and kissed me on my mouth. Then on my hand. He said ‘you’re wonderful, can we see each other again, tomorrow?’. Since then we texted, and hang out every day together. He introduced me to all his friends, kissed me in public, went for dinner, went to the club,… He was so sweet. He asked me to have sex, and when I said ‘no, I need to be entirely sure you like/love me first’, he said it was ok and got to sleep. The next day he told me he wasn’t ready for a relationship yet because his ex broke his heart real bad. We kinda had an argument and the next 2 days I didn’t see/hear him. He wouldn’t respond to my texts. A few days later I went to his work to talk, and everything seemed better. We didn’t do fun stuff together anymore. I went to his place, he went to my place. We were very attracted to each other so we had sex a couple of times. He was very sweet while and after everytime. Used to kiss my forehead and stroke my hair, but never told me he loved me. Used to give little kisses in my neck from behind. When I send him a text he didn’t respond. Yesterday I asked him to come to the bar, he said he couldn’t but he’d call me if he was back in town. He didn’t call at all and didn’t send me anything anymore. I sended him one more message, explaining my feelings and that I have feelings to, but he didn’t respond. Within 6 days he’s leaving for a couple of months to another country. I don’t know what to do… I thought he loved me because he wanted to meet my family, he was so nice to them, he told my mom he was very serious… but this… he’s breaking my heart and I’m afraid I’ll never hear him again.