I have been married for 10 years, two DC under 5. I was devastated to find out my DH had a huge collection of porn when I was pregnant. He had been looking at porn just 2 days after miscarrying our first baby. At the time he was working late on a project at work but these evenings were actually filled with looking at porn. He said he would get help and stop, he made an appointment with a psychotherapist but then told me he could sort things out himself. I believed him. I had a difficult pregnancy, my baby wasn't growing properly and I was in and out of hospital a lot.
After my son was born, there was another incident where he was looking after our DS while I had a lie in, he brought the travel cot where our ds was asleep into the room where the laptop was so he could look at some porn.
I was furious. He was apologetic and said it wouldn't happen again. His answer was to keep his laptop in his car and put a password on it so I couldn't check it anymore. I then found out he started to see someone, he insisted it wasn't sexual. He said he would stop seeing her, I was checking his phone and that is how I found out, he now has a new phone with a password on it so I can't check it anymore. He has told me such terrible lies and is an accomplished liar.
I now suspect he is seeing someone again but have no proof, AIBU to spend a months salary on a private investigator to check his movements on friday this week? His work is very flexible and he has a day when he does not need to be in the office. I just need to know what he is upto and then I can decide what to do next.