Joy in social dancing

There is great joy in dancing socially, especially with a signifant other. I am, however, having great difficulty finding joy in dancing socially myself, ever since I lost Dale, my dance partner and love interest earlier this summer (to another woman -- ouch). I thought getting out and forcing the issue (going to singles' dances, etc.) would help matters, but it seems to only have made matters worse. Sometimes, I see Dale and his new significant other at these dances (the singles' dances!) and it really, really hurts...