imonlydreaming - so sorry that you are going through this. I know it is hard for you to believe, and when you trust somebody, you try and find innocent explanations for everything. My XH was texting his mates wife thousands of times a month and I tried to believe that he was just supporting her. When you love somebody, you cant believe that they could do that to you, even if the evidence is staring you in the face.
A text saying I Love You, is not a joke. He then gave you a silly story of how it happened to somebody else. Like others have said, he is trying way too hard to explain away a joke or a mistake.
Putting a code lock on it after that happened, is a sure sign that he has something to hide. I have a lock on my phone as it is used for work, but my XH always knew the code.
and the commute story, well I am sorry, but he is taking you for a fool. :( Where I live, everybody has to commute at least an hour to work. Millions of people across the country commute 1.15 every day. Your H should want to do that short drive to get home to his family.
Don't blame yourself for believing him, as I said before, when you trust your partner, you should believe them, but I think the scales have fallen from your eyes now.
tell him that the DC want to visit the house where he stays, that they want to see where daddy is when he isnt home. watch him squirm and make excuses why you cant go there.
and as for lying about his bonus.... again, why not tell you about it? what does he want to spend the money on.. maybe soon he will come home and announce that he has to go on a weeks training course or something...... while he will really be booking a holiday.
My Xh walked out with no warning, after we went through a bad time, family illness, death work stress etc. I tried to make all the excuses that I could for him and think that he was having a breakdown, but in reality, he had fallen for somebody else and changed overnight.
I hope you find your way through this