Thanks for all the responses, that sounds hopeful. I don't even know for sure if I have attachment issues, I've just started to suspect that maybe I have the fearful-avoidant type of attachment. Fear of getting close to people, although desperately wanting to, not being able to be vulnerable with people, maybe a subconcious avoidance of relationships.

I'm scared/embarrassed to talk to my T about it - as usual, I'm afraid of seeming attention seeking or making things sound worse than they are, and I'm not sure my childhood was 'bad enough' to cause attachment issues. And fearful-avoidant, although it seems to fit the best, is usually described as the worst type, so I feel like I'm being over-dramatic. I'm scared he won't take the idea seriously. He's cbt based, though we do more general stuff as well as cbt; I don't know whether he formulates things in terms of attachment issues as such.