Most Helpful Guy
Best you can do is give him space and don't push/force the situation. The breakup happened for a reason. Show him that you are doing great being single, post a lot of pictures on social media. The only way to get an ex back i s let the relationship go. #1 rule is that you should never be friends, because that way your ex gets emotional support from you. which leads to nowhere...
If you can't stand texting back, then delete his number and unfollow on social media. Otherwise it will just keep you depressed.