I'd go with being led by your heart on this one. What feels best for you?
I know it's probably the old: should I set boundaries that show how things will be if we D so he realises that life is going to be different?
OR
should I keep up positive interaction so that friendship can grow?
I'm still working on the latter option, cause i figure that it's not up to me to try to 'show' him that he won't have the same relationship with me post-D. I prefer to take AliSuddenly's and happyagain's advice to be loving, patient and friendly. Realise it's easy to fall into denial on this path, but I figure I'm only 13 months in to this (!!!).
I think having to hear these things (your nickname) and having contact over financial matters is harder than setting things up so that you don't.