(((hbb)))
This is the part that really sux. You're hurt and don't want to think about them with someone else, and terrified of seeing them together.
ITFM said it beautifully - no one has the right to make you feel uncomfortable in your hometown.
I agree with Denny - what works for others might not work for you - you are the best judge of what you need. If the thought of it right now is causing you harm, why not stay at your parent's. Just until you feel stronger