hi PineLime (PL), how disappointing life can be at times, but on the other side your loss of weight far outweighs the loss of this lady who couldn't have been more trouble for you if she stayed with you, and as it has turned out, thatt what it would have been like.
The weight you have lost is fantastic and that requires great concentration and a a goal you wanted to aim for, and you have reached it, the only problem is having to buy new clothes,but I'm sure that doesn't mean anything.
Love has so many meanings to it, where people are capable of saying they love you, but on the other hand do something behind your back which would annoy you if you had found out.
I must say that I'm am pleased that she has gone, because if had stayed together there would have been more nightmares for you, a bit difficult to accept that at the moment but in the long run please try and believe.
The determination that you have obtained by losing a leg ( unfortunately) and then losing 60 kg is remarkable, so I applaud you for your total courage, well done, and there will be someone who will also admire you for the effort you have achieved. Geoff.