OH MY GOD! I dunno where to start from dude..... ATTRACTION IS NOT AFFECTION....
Have you even gone through the various lessons of attraction and seduction?
7 months is enough to say SHE IS NOT ATTRACTED! 7 months is not 7 weeks or 7 days!
Do you really think you would "don juan" a girl WELL and not have her disturbing you by the 3rd month at most ? ( WELL doesn't necessarily mean how good, it means to her peculiar taste... Girls have different standards )
Truth is, maybe you can still get her... But I bet its gonna be out of pure pity, I'd rather be the guy a woman considers as her prince charming from the blue than somebody who gets her as a result of pity..... Exercise persistence without desperation if you insist you wanna chase her. Make her chase too. Demand effort from her.
Pray her ex doesn't have some hold on her mind cos its never gonna stop as long as she not really ATTRACTED to you.
7 months is enough to suggest you've lost..... BUT..... Try if you wanna, ignoring her/delaying replies is just one out of many things you'd need to do to peak her curiosity .... Understand ATTRACTION.
Be ready to move on, we all lose too. I bet if you're ever gonna get her attracted, its not gonna be now.... Instead move on, meet girls, Go catch fun, spin plates, exercise revenge on other females well enough to get so much female attention and p***y that you forget her, catch more fun. You might just even find out that you deserve better after all. Become A DJ. We are all on the journey too, you're not alone.