How do you heal someone who is heartbroken.
Actually, this is a nice way of saying "I wana date the girl but
she's heartbroken over her ex, can't get over and etc etc."
But the main point is, how do you do that? I think this is a
phase everyone go through whenever we know and start paying
attention to people.
You like her is it?
Then CHU all your romantic stunts on her ok?
Like you already said the answer "start paying attention to
people". When Anyone is upset, despite whether they got a VAGINA or
not, they NEED alot alot of attention. They may not express instant
gratitude, but they will be secretly consoled by you.
One good tip, go and copy alot of GOOD Jokes from the Jokes
& Humour Forums. You are going to need alot of that up your
sleeves if you want to cheer her up.
But that's just me, I would be so annoyed and also
secretly happy if a guy come and force me to laugh with his
funny jokes when I'm upset. 
Cos I'm not supposed to be laughing and happy when I'm
upset.......