Now listen to me love....
I too am a good 3st more than I want to be.
I met a guy on t'internet, we texted like mental, we met, he never texted me again, cut me dead and refused to take calls.
It hurt, it was really shitty, but you know it was HIS problem, his rudeness and HE ultimately wasn't good enough. I did feel like shit for a while.
I went on another date, terrified at how the person would see me and that they too would reject me for my size. He said he liked me as I was. He said I was perfect.
OK so he turned out to be a nutjob not to be the one for me, but he taught me that I am actually a nice person, I am a great friend, good companion, and if someone doesn't like me, then that is THEIR problem.
The next date I went on, I went out knowing that it wasn't just about ME being acceptable, it was about HIM being acceptable to ME too, it helped relieve the pressure. I felt stronger, I had no nerves, no expectations, so not setting anything up in advance.
I am willing to bet that the guy you are meeting up with will also be thinking that he may have changed too, so don't think it's all about YOU and how YOU look. He may be as nervous as you are.
In any case, if it is all about looks and a stupid idea of a size 8 or whatever, and he's rude, or goes quiet then the guy's an arse and he's saved you the bother of leaving him for dust. It's HIM that would be the reject, never you! YOU could always lose weight, a guy that would treat a woman badly will always be a prick.
YOU are ALRIGHT! YOU have many fabulous qualities, and YOU are good enough for YOU, you are good enough for your DC, and you are good enough for anyone else.
You are interviewing for the best job in the world, to be loved by you, so be stringent and be confident in yourself.
Take things slowly, it's been a while and you need to build up your confidence a bit.
good luck and HAVE FUN! 