What's the point of living when you know you have had the best?

Well, I'm sorry for your loss. Just keep the lord on your side and pray for something great to happen that will turn your life around. If you wouldn't have said that you and her have to stay and touch my first thought to turn around your life is to end contact with her. I know this is not what you want to do, but honestly it is the best idea. Contact will just make you think more and more about her, and that wouldn't be helping your situation. Get a girlfriend and some buddies and start hanging out often, try to forget her in all and focus on the road in front of you, not the past. I know you said you didn't want to do these things, but this is the best way. If you absolutely must stay in contact with her, make them quick conversations. You do not need a deep conversation with an ex like that it will tear your heart into even more pieces. Like I said earlier just try to focus on the future and forget about the past. I know you loved her and you always will, but if she has found a significant other then in my mind that will be the only way to move on. Good luck with your life, keep God close and try to develop a new mindset with your walk with the lord, your friends, and maybe a new girl. God bless, I wish you the best of luck with moving on, i'm afraid this is all I can tell you.