What a time to find those emails - I am hurting for you. Do what the others say and print them off and keep them somewhere safe.
If it's any comfort, my H' OW thought they could make a go off it all even though it seemed logistically impossible. She even left her H and her two children and set up her own house. In reality there was no way it would work though. At the moment it is all words; I know that hurts bad but it is just words and you know that her H wants to keep his M if he can.
Have as good a time away as you can - show your H's family how wonderful you are so if he does mention to them in the future what he has been up to they will just think he is crazy to think about giving you up.
Saffie me 46 H 46 M in 1986 D20,D18,S16,D13 H's A 01/05 to 07/06 H recommitted to M 07/06 renewed vows 09/06 Going from strength to strength