Re: when your ex seems to have moved on and you're left there ... alone
Although you didn't ask for something to read that may be a good idea. Maybe in addition to feeling lonely you have something physically wrong that is bothering you and together they both can give you that feeling of being sick.
Even though everyone wants to divest themselves immediately of the feelings of being alone, I think Mooney's advice on that makes sense. While you can't change the way you feel in the blink of an eye, you can look to others for information like at a convention where you are not required to talk to people--unless you want to talk.
If you haven't thought of this before, consider going to a health convention near you. Being at a convention will help you look outside yourself and that can help lift your mood temporarily.
I know there is one convention that is low cost and with a pleasant outdoor garden setting. If restoring your health or improving it is an interest of yours, then you may meet new people who share your interest. Many of the speakers are known world-wide. Many are controversial and have been put through many legal harassments for sharing their views (on how to restore health with the least amout of pain) with the public. Check the speakers' program for anything usefull to you.
(They have good lentil soup, $6.)
Links for information about the convention:
//www.curezone.org/forums/m.asp?f=254&j=3828
http://www.cancercontrolsociety.com