Oh yeah, I'm late to the party but Portal 2 is complete (single player that is)

I know, I know what took you so long. Well having a baby will cramp your gaming time, hell I'm happy to get any gaming time in now a days! Portal 2 was a special treat for me, I loved the first one and had even more fun with Portal 2. Now I am trying to find time so my buddy and I can complete the co-op part of the game, we have done a couple of the early stages and were impressed and had a great time. Valve, please give me Half-Life episode 3 or part 3 or whatever, just give me some Half-Life and then more Portal please!