I am so sorry, I really feel for you. I am 59 and will prob lose my left breast (still waiting for biopsy results). When I was young and up to my late 20s my nickname was Twiggy, so I never really had a decent pair to start off with It was only in my mid 30s that I began to 'grow a pair' and I have become fond of my late bloomers. No partner for me either but I'm valuing life as a priority and anything else is a bonus.
I do so hope you feel better about this in time - a great big virtual bear hug to you