I don't know why I'm doing this

We were sitting under a tree watching every one else play soft cross, hoping that the teacher didn't notice we weren't. It had started so cliched. Two team captains choosing one person at a time to be on their team. the rules were girl, boy, girl, boy. All the girls had been chosen, I was all that was left, but he still didn't want to pick me. he kept looking past me, looking for someone else. eventually he looked at me and said "uh, yeah, you" He didn't know my name! We stood on the field for the first half, watching the ball being go from end to end, always detouring past us. No one noticed when we left the field, or no one cared. As we sat under the tree she told me how she was so sad, she told me that whenever anyone asked if she was ok she would say that she was fine. she told me how she always regretted not telling the truth. The truth was that she wasn't ok, but after she had told them she was fine. she couldn't say anything more, not even if they could help her. Sitting under that tree we both made a promise to tell the truth and say what we meant, I failed. She told me the truth, the hardest thing to tell anyone, and I said nothing. I didn't know how to say it. I didn't know how she'd react. She doesn't need to know about my problems, she has her own, and what could she do about mine anyway? I don't want her to know the thoughts in my head, I need to be able to help her, she asked for help, I didn't, I wont.