I had similar problems. Glad to be out of that pattern. I think part of it has to do with this:

“Attachment is the drive for closeness and proximity to another human being for the purpose of being taken care of, or of taking care of someone else”. —Gabor Mate MD

Therapy puts the client in a terrible bind in this respect. An hour of proximity then nothing. I think the whole concept of "attaching" to a therapist is a disaster in the making (for some) for this reason.