I want it to be a secret between us

This morning in school platoon mates got shocked. They apparently received a text from x. It was a long message with a goodbye in the end. They were actually very very shocked and asked if I received one. The answer is yes but only that I was the one who initiated. I shouldn't have. I am regretting. A lot. My platoon mates were like "argh i am so sad. but why so sudden and unexpected?" I couldn't answer them. :')