"I don't think your upset is shameful at all- please keep in mind, you haven't killed anyone or committed any other type of offense, you're simply heartbroken over losing someone who took the time to help and understand you and that's normal and human."

Thank you Leah123, this is true and it helps.
Thanks for the replies Chroniccryer and mxk564. I guess I'm not alone. It's weird to have said my feelings now for the first time but I have been lurking on this forum for awhile and people mostly leave such thoughtful and compassionate replies that I thought I could risk it.