My first T and I have maintained contact now for about 30 years. A few times a year we talk on the phone or email, completely friendly interactions, not therapy related at all. We are kind of long distance friends, sort of like old school chums who stay in touch but aren't significantly involved in each others' lives.

I think the reasons this has worked is because (a) there was never any possibility that he would or could be my therapist again, (b) we live a fairly good distance from each other so we aren't talking about face-to-face contact, and (c) I never had issues of transference/trust, etc. that would make it messy. He's retired now and having fun playing with his grandkids.