"Cause these words are knives and often leave scars,
The fear of falling apart,
And truth be told; I never was yours,
The fear, the fear of falling apart," - This Is Gospel | Panic! At The Disco
I understand :/
It can be tough. If this person is someone you can talk to, maybe try call them? Or arrange to meet some day when you're both free? If not... then try focus on other things. You don't want them to be sad that you're sad am I right?