You sound like you're looking for a particular answer
You sound like you want people to say " Yes that's deceitful, he's betrayed you you can't forgive that"
If you want that I'm sure you'll find loads of people here that'll oblige.
If you really want help and this is threatening your relationship and you want to save it why not try relate.
They do phone counciling and will probably be pleasantly surprised that you've not waited for the "throwing pots and pans" stage
http://www.relate.org.uk/wantadvice/