hi closed doors,
I will try to answer, but I'm not sure anything will be very helpful.
While I am currently seeing a T (well, on a 3 months break, but it started only few weeks ago), I can remember how I felt after leaving the long-term T I had been seeing for 10 years, some years ago. And I did think about her, a lot, even though mostly in negative terms, as we parted because I felt she was useless and potentially hurtful. But I still missed her, or more exactly, kept using her as a reference, because I was used to her, so it had suddenly left a hole in my everyday thinking, even though I consider that we went through a good termination process. It stopped several months later, because my entire life changed (I moved, went to an intense schooling program where you basically didn't have a life anymore) so... there was no space for her in my life anymore. I don't know if it helps, but... I went through the same phase until the hole got filled.
Other: I LOVE random acts of kindness, and try to do some regularly, and, yeah, I've thought of doing something like that. But... I never did it, and never will (because of my own past behaviour, I just can't allow myself to risk doing this) so I generally anonymously place the flowers at strangers' doors. I do not want to take the risk of having to explain it to T. So, my question would be, would you give him not anonymously? But it is still a very nice idea, and I might be too cautious.
and good luck with those questions.