I relate to eagerly waiting for responses but not to speculating that something might be wrong about the T or our relationship (the latter rarely occur to me even in ordinary relationships, I don't tend to doubt them beyond what I see and have evidence for, which can be another kind of problem if extreme). My last therapist very effectively conditioned me for not being obsessive about emails though by engaging selectively and in a controlled, quite minimalistic ways. One of my biggest successes with this round of therapy as the obsessive virtual communications were really causing me lots of problems, mostly as useless distractions. As I said I was never paranoid about what others thought of me and our relationship when they did not express it directly, but was really hooked on just talking about whatever with people online, for years. This last T made a big difference in that annoying tendency.