Actually, I took it as: is something going to happen to DR. Tom? I see it this way... If Dr. Tom was still in 43 year old Erica's life why would she stop by and say "Hi" as if she missed him, that must mean that he isn't. Especially when he says to her "I'm sure we'll still be talking 8 years from now." And the way she looked after she closed the door to his office makes me think he really isn't around and not just quit being a Doctor, as in something will happen to him in this strand of time. I think this because even if you are a Doctor you still have a Therapist yourself, we get to see Dr. Tom's all the time. It's really sad because it means that our Erica (the one we get to follow and see all the time) will be around in the future, but won't be around in Kai's strand of time in the future, which is a real bummer because I love them together soooo much! I will just chalk it up to time-crossed lovers and see what happens next. Also did anyone notice how 43 old Erica was dressed and not wearing a wedding ring? She looks so sophisticated and chic, I'm guessing their publishing company really takes off, but she is still unmarried, so I'm curious to see who 43 year old Erica ends up with, and what her family is like then.