God, it breaks my heart. I had a friend from a school nearby that did the same at16- surprised all of us and was just so sad because any one of us would have been there for him if we had an inkling he was thinking of that, or even if we knew he felt bad. 14 is tough, it doesnt last forever, but at14 it feels like it will. As a parent it must just break you. But sometimes, there is no way to know. Best thing is to be honest with your kids and let them know you will talk about ANYTHING with them without judgement and with love.