That all sounds incredibly familiar, as I'm sure it does to many many others - I promised myself I'd never fall in love, I was sure it all caused too many problems and nobody wound up happy. Obviously, I did, and proved myself right! But everything in life is an experience, whether good or bad, and we can always learn from everything. Also, bad experiences mean you can appreciate the good times more - cliched but true. I think music is probably one of the greatest healers though, which you obviously already know, so keep singing/playing/both, and take care.
Hugs and good thoughts, jayohjo XX