The only sane thought I have is that I love you

Everyone's left him, David is alone. He remembered his happiness when he thought he could settle down with John, his best friend. But he's gone now, so is Martha. Rose. Oh Rose.But David realised that his failed attempt on his own life, though not at the time, was a blessing. If he had tried not to or had been successful in jumping of that building he would have never met him. A man in the mental hospital he had been sent to who claimed to be 'The Doctor'.A bright man who longed to be back in his TARDIS, promising David that he could join in on the adventures that he told him so much about.