Everything comes out of our head but that does not make it "unreal". I think I would enjoy an ice cream sandwich so I go get an ice cream sandwich and see whether I would enjoy it or not. That is what our head is supposed to do.

Fantasy is a wonderful tool! But like any tool it can be used in many ways. Using it to "escape" instead of help us live our lives is not wrong or bad, but can be a waste? We only get so long to work on living so taking long breaks watching TV or surfing the Internet, laying on our beds thinking of nothing particular, sleeping during the day, etc. uses up that time when, later, we might wish we were further along on projects we want to accomplish?

You did have a relationship with T1 and your memories of it can be used to comfort, teach, challenge, etc. you now, in your present life but staying with the memories and thoughts you have of T1 can be like watching an all-day marathon of your favorite TV show when you have a test in school coming up or a project you want to get done. If you are thinking about T1 rather than working with T2, that will take current therapy longer to get done?