Reds, I know it probably doesn't feel like it right this second, but "time" will make it better. I don't know if you'll find this useful but, when I'm suffering a loss and don't think I can live through it, I split "time" into the smallest increment I have to to get "yes" in answer to the question "can I stand this for <blank> long?" Like, "Can I stand this for another hour?" If "yes", I ask myself the question again, when things seem too much to bear. If I have to, I figure I can stand anything for another second. You string enough seconds together and you have a day.
The second thing I do is try to find something outside my own head to get involved with. I may not FEEL like being involved, but I do it anyway. I guess it's a form of distraction.
In your case, remember, your relationship with your T isn't ending. It's just changing. "Change" is an inevitable part of life and a lot of times its "good". You're moving in to a place with new opportunities. Remind yourself of that, in the most positive, affirming way you can. I literally have friends all over the world. I miss them sometimes, because we aren't in the same place. But we stay in touch and sometimes we ARE in the same place. It's ok. In fact, probably my best friend lives a thousand miles away. He doesn't email & hates making phone calls as much as I do. At one point, we didn't see or really talk to each other for 20 years. Then we ended up working together and things picked up right where they left off. Right down to the long running jokes. My point is, this isn't "The End". There's hope and things will be ok. Having said all THAT, I know it's hard. I wish it wasn't! Welcome to reality, I guess, and remember, there's a bunch of people here along for the ride. What you're experiencing is "a feeling". As I understand it "feelings" can't really kill you, it just kind of seems that way sometimes.
Take care, look ahead and have FUN!
Hey, just a thought. (This is something might T might suggest and, if he suggested it to ME, I'd be totally unable to do it. LOL But, maybe it will help you.) Do you think, when you REALLY miss her, you could close your eyes and concentrate and remember EXACTLY how you felt at the moment of that hug? I mean "exactly". Every detail you can come up with. Play with the feeling and try to make it stronger and less strong. Maybe pick a physical thing to tie it to. Like squeeze you thigh with your hand. Squeeze harder to make the feeling stronger, etc. Practice! Then, think of that hug as a gift. A gift that she gave you to take out in to the world, to recall anytime you need or want the feeling, because THAT feeling is "real" too.
Take care!