And now I feel dreadful.
My Ex was a knob, he cheated on me and joined sex sites etc. When I met DP I told him how hurt I had been and he always swore he would never do the same.
We had been together a year when I randomly decided to check his phone and in his internet history was the page 'you have just logged out of facebook of sex' He said he had only looked at it that day and that he had to create an account to see the photos on the site - that he was curious. I checked his emails and he was telling the truth. He threw the phone in a sink of water, deleted his email address and de-activated his fb account as 'proof' it wouldnt happen again. It took ages to get over it and I think I would have left him if hadnt been pregnant at the time.
For over a year after that he only had a very basic phone with no internet access and we shared an email address - his choice.
Then he was given a blackberry and set up an email address etc although as far as I knew didn't use it to often.
I had a fit of paranoia and took his phone when he was sleeping to check his emails but couldnt find the inbox so went into the settings and set it up so that his incoming emails very sent to our joint email address. I know I shouldn't have but I just had a nagging suspicion.
And then I did something even worse, I used an old phone and put a new sim in it and sent him a wrong number text saying he was the most gorgeous man in the room, and he replied. After a casual few texts he replied that he shouldn't be texing as he has a partner and dc and he didn't want to lose us. I was really happy that he had 'proven' himself to me.
Until he text again this morning asking what I looked like etc and if I could send him some photos along with his email address. So I sent him some from google, and he sent some back. There were lots of dirty texts and some talking about wishing he was single etc and possible meet ups.
Right now he is upstairs in bed and I have just gotton an email to 'her' account saying he is in bed playing with himself and thinking of how beautiful she is.
What have I done 
Name changer due to being ashamed of myself.
Sorry about typing, nursing baby.