I would reframe. You are not unilaterally attached to your T, you are in relationship with him. Your T cares about you as a person also. That is what "real" relationships are about. Yes, you are vulnerable and will probably hurt on some level when you and he part/terminate if it is done at the "end" of your therapy, just as he will. I believe if we do not go through such a relationship, we do not fully learn to relate and we are our normal "island" selves unable to figure out how to build bridges to another or provide bedrock support on our side for theirs.