Generally when couples break up, they break up for a good reason. As they say let them go free and if they really loved you they will come back. Before social media a break up meant exactly that, with zero contact . Now with social media you can hold on tight by checking up constantly . I suggest you have no contact for over a year and then call to ask for a coffee, basically reset the relationship , give it a second chance as both of you will have learnt and matured.