I think Ted was just in love with the thought being in love. Yes, Emmett did declare his love…but I think it was an appreciation for him. I have people who I feel love towards, but not in a romantic way. If I see someone doing something really caring, or they are kind to me, I might feel, 'I really love you', but this is because of the person they are, not because I want anything from them.
Ted REALLY wanted to be loved in that way. Unfortunately, he didn't feel worthy of that love when he received it, and sought something outside himself to make him feel better. And we all know how that went.
