Is it normal that i feel sad about his behavior?

We are not lovers, but he liked me and i liked him. It happened because my parents forbid me for having a relationship as they think i am not ready yet. So, it's about his tendency of replying me so late. He used to reply me fast and if he was about to reply me late, he'll let me know. But starting that day, after we come into conclusion that we shouldn't force things and stop acting like we're lovers, he began to reply me once a day or later. But, whenever just the two of us met, he still act in a romantic way. I know we still liked each other that time, but it's just that his cold way of replying tortures me while he still act like we were lovers when ever we met. He did mention that it's been his habit of replying coldly and sometimes ignores my messages (he said he did it to all of his friends, even his mom and the fact that he was living in a dorm where phones were forbidden for 3 years made his tendency of putting less attention to phone) but he used to not ignore mine like he did nowadays.. :(
so, is it normal that i feel sad about his behavior eventhough he said he still like me with the fact we choose to be friends?