Make Her Miss You Like Crazy
Making your ex girlfriend miss you isn't really hard, but you do need the backbone to be consistent with it. But I think you might know what I'm going to say.
You need to remove your availability. When you were together, you were pretty much available to her all the time, except for when you had work duties. Now that you're apart, you need to stop allowing her to hang out with you all the time. If you're already not talking to one another, the only problem now is for you to STOP contacting her.
How do you do that without going crazy? You need to do what someone who doesn't care would do. Keep yourself busy and make some new friends to hang out with. There's something about the excitement of meeting new people that will help take your mind off things faster than if you just hanged out with old friends.
Variety is key here.
Make Her Want You Back
Making her miss you is just about discipline. Sooner or later she'll start contacting you or giving you signs that she's missing you. When this happens, you need to keep your cool and take things slow.
Stick with your plan of not settling for friendship and let her reach out to you at least 3 times in a row before moving onto a date. Remember to keep things casual and light and resist bringing up the past relationship unless you're sure she is definitely interested in coming back again.
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