['My girlfriend just left me, this is awful.', 'That sucks. Did she say why?', 'She wanted to try something new, she was bored of me.', "Wow that's harsh.", "It is, I don't know what to do anymore, any ideas?"]
Find a new girlfriend.  That ship has sailed.   If you're really still want her consider trying to play the jealousy card.  (ie; make her jealous)
When my girlfriend broke up with me, she left me heart broken.