How can I get over this?

So I have a girlfriend who is super hot but she is not that smart, basically i m 3x more smarter than her even tho she was my senior at school... but one day I broke up with her as my parents knew I m with her... and then I left her but still I miss her so much. On the other side my best friend doesn't like her very much we used to be togather most of their times... and when I broke up with her i was still messaging her on Instagram, but one day I was on trip with my bff and she seen all my messages with her, by the way she was also in the trip... and my bff got really upset with that, that she was about to end our friendship... but it took me 3-4 days to convince her... then I never talked to her later... my family and my ex's family has very good relations with each other.. so I don't want to make some drama from this relationship so I ended it... i really felt for her now her brother is forcing me to convince her that she can get better guy than me... but i said no... her answer to this was also no... we were truly in love with each other but due to these circumstances i couldn't help out...😭

How can I get over this?
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