Well, if you've been friends with her for so long, you should be able to initiate conversation.  Start by talking about something you both have in common, and then ask her if she'd like to go out to lunch with you some time.

Take the opportunity while you have it, I know it's terrifying but if you wait too long it's only a matter of time before someone else gets the same idea.  Since she just broke up with her boyfriend, it'd be very easy for your approach to seem disingenuous (right after a breakup would be the time when all these guys will be trying to flirt with her) so try to distinguish yourself from them.  Talk to her at some point, tell her how you feel and ask her out.  If you think she's into you, that means she's into YOU.  In other words, don't focus on trying to be someone she'd like, just be yourself and you'll probably be a lot less nervous.  Good luck!

Honestly mate by the way you’ve described it I would just go for it because you’re already fine talking to her so just ask her out for lunch or something and see what happens .

Bappo,

You'll need to be really upfront with her. Let her know that you are interested to be more than just friends with her. Honesty is the best policy. If you aren't smooth, don't try to play that card because you might come off as tacky or awkward. If you are shy, it's a good thing because it shows humility.

Good luck mate!

Well we always start with conversation. So i guess start with that then if you think its time then tell her.

Go for it. Look her in the eyes and be honest with your feelings. She will appreciate that. Confidence and nothing ventured nothing gained! Good luck!