Recipe for a very bad evening:

• One three minute long conversation;
• One cracked, if perhaps not broken heart;  
• As many questions as you can think of;
• As few answers as occur to you when you're too exhausted to think any more;
• A pinch of doubt
• A dash of self-pity
• Lots of tears

Mix all the ingredients and then tell yourself that you've survived before and will again.  

And believe it.