Bit of history to not drip feed: Me and DP have been together for over 6 years, we've got 3 DDs and we have been really happy, have a great connection, sex life is good and we enjoy each others company usually and argue very little. Kids have brought the usual stresses and strains, no sleep and not sitting down together and talking very often. I'm also a SAHM now because he earns ££ and also recently had a pay rise, I was a TA but got made redundant so he agreed it was for the best and he would support until I found something I wanted to do.
I've noticed over the last 6 months while I've been at home he's been distant, not doing little things etc so I mentioned it and he said it's just that we don't get time to spend together. I started feeling a bit suspicious, not sure where it came from but when checking the washing I looked at his shirts and saw foundation on the arm and lipstick on the bottom half which were not mine! I didn't say anything and waited for the next ones to see if there's more, there have been 3 more with foundation on collar/arm and glitter lipgloss on the bottom half. I'm finding it hard to believe it's innocent but trying. Thinking back, he's been working late and he's also mentioning a female colleage a lot who he does have to work with closely. I've tried to wait it out and see if there's anything else before accusing him because I know he will deny it. I was a bit off with him but didn't say why and he bought me flowers home from work.
I looked at his phone (which I have never done) and saw usual work messages with this person but also I started to type the name in the search box to find phone entries and a search had been done for her. Now I think it's because he's tried to search to delete the entries as there are only 2 and I know there should be more calls than that, they work together so closely. I also found a memo which said 'DELETE' like a reminder to cover tracks? But this could have been for anything! I hate this! What do you think? Help!