Re: Pain of love
I’m sorry you’re going through difficult times, and I hope you feel better soon. If at all possible, try not to worry too much. He will eventually find someone and he will be happy. And you too will find someone who will truly love you and vice versa and you will be happy too. Setbacks, sometimes severe like the one you are currently going through, are unfortunately part and parcel of life. But times change. And change for the better. Things will get better for you too.
As for suggestions about how to keep oneself busy, I think reading a book can be a very rewarding experience. Something non-fiction though that doesn’t have a lot of emphasis on relationships and melodrama, maybe biographies or memoirs of historic personalities or other inspiring people you like? People like Hillary Clinton, whose latest memoir was published this week. Or you can read a book on topics that are close to your field of interest/university major(s)/profession.