1. Continue being friends with him. Talk to him casually. Talk about anything under the sun but don’t talk about your feelings anymore. You shouldn’t make him feel guilty just because he cannot reciprocate your feelings. Nobody deserves that.
2. Don’t bug him with your messages. Wait for him talk to you first, and when he does, don’t show how excited you are. Because we know that you, yes, YOU are very much excited to talk to him or her, who wouldn’t be? But if you show too much excitement, you might get disappointed again. And there’s a higher chance things will get awkward. Let’s keep ourselves from inflicting any more pain.
3. Open up. Try to talk to other people. Don’t flirt. Just be friendly. We don’t want the impression that we are not serious about him, but we don’t want them to think that our lives revolve around them.
4. Deal with it like a matured man or woman that you are! You guys are still friends, at least! Be contented with friendship. Just enjoy your friendship. After few years, things will change, who knows, he might fall in love with you too, or you fall out of it, but one thing for certain, something will change but you still got each other even just as friends.