I'm a bit confused by this whole set up, and therefore I don't feel able to offer advice yet. @Accidentalotherwoman would you mind telling us how long his affair with you has been going on, and how you met, and what excuse did he give to you about never inviting you back to his place? Also, how did his wife find out about you? As you appear to live in roughly the same area as his wife, your boyfriend presumably never took you to local pubs or restaurants, didn't any of that make you even the slightest bit suspicious?
You, OP, and I are obviously very different people, as apart from all the things I mentioned above, my OP on this same subject would be totally different to yours, eg. mine would have started something like this:
"Can anyone offer me some very kind and gentle advice please, on how to move on from here, as I am devastated to have been told an hour ago that my DP, who I love, and liked so much, is actually married to someone else!
As if that couldn't get any worse, it was his DW that told me! I don't know how she found me, especially here at my home address, but I think that I was so shocked and heartbroken about the whole thing that I really couldn't take in much else of what she said.
She has left me her phone number on the back of an envelope, and scribbled, can I text her tomorrow to arrange another meet up - somewhere neutral - once I have got over this initial shock? But I don't think I will ever get over it, I had even been thinking that he might be the one... she has also asked me not to say anything to her DH if he contacts me tonight. I am not due to see him for a couple of days, but he usually rings me to say goodnight, so I think I will have to pretend to be asleep when he rings, as there is no way I could speak to him without crying and giving the "game" away.
So if anyone has any friendly advice, I would be very grateful. Many thanks in advance Mumsnetters."
Of course OP, I do realise that we all handle things differently, but you don't seem very upset at all - sorry, maybe you are just better than me at the whole "stiff upper lip" British thing. I do hope that you are coping ok?
Edited to make a correction.