Don't try to erase someone out of your life all at once because the simplest thing such as nostalgia will trick you into thinking that things weren't as bad as you made it out to be. Do it little by little and you will feel much better. Start off by deleting their text messages. DO NOT READ THEM, you will lie to yourself when reading them, and start reminiscing. DO NOT by any means necessary view their snapchat story, you will only hurt yourself more. Also don't look who views YOUR snapchat story because you'll find yourself looking for their name. Just assume that everyone saw it. This goes for other social media sites Instagram, Facebook, Twitter and even Tumblr. Do not check them, just like snapchat, you will only be hurting yourself. If you happened to run into their posts, shares or tweets say "good for them" or "shit happens" and keep it moving. If you can't bare to see them, then unfriend, unfollow them, it's only social media. You can do it. Keep busy, find a hobby something that requires your almost full attention. While keeping busy, IF and that's a big if, they text or call you, keep it short and simple or ignore them and get back to your hobby and working on you. PAMPER YOURSELF, do whatever you can to make you feel sexy, cute, beautiful. Look in the mirror and say "I'm the shit" there's absolutely nothing wrong with that, because the one person who deserves that kinda love is you, and you only. Work on yourself. Like wounds, it's gonna take some time to heal, and it will heal. A piece of you has been ripped away, and you must tend to that wound and keep it from getting infected by some bullshit. Soon it'll be just a tiny scar.