For the handful of Ts I saw in years past there really was no progression. After the initial awkwardness, it was mostly indifference on both sides. Then I'd just stop.

Then with a T last year it was something like:
- long period of slowly testing the waters
- increasing connection, trust, vulnerability, intense feelings
- emotional enmeshment
- dependency, obsession, chaos
- termination, abandonment, crushing heartbreak, powerlessness, humiliation, betrayal, profound disillusionment and despair

With Ts after that it is was basically over before it started. Still think it's possible to find someone who can help, but seems rather remote. Have seen the fragile edifice behind the facade.