To that person I would say: I am sorry. If you both have tried I don't see much more you can do. However out of respect for what you have meant(and probably still do mean) to each other, hold off on dating of any kind until it is official.
I would tell your friend that you are there for him/her if they need you and will do what you can to help.
I know you are that kind of person and I am sure that is what you would do.
kat
Me-53(and learning!) S24, S21, D18, D17 Just keep swimming, Just keep swimming. Dory