Hi, name changed for this as I usually only post about the kids and don't want anyone to see this 
So DH's phone was on kitchen side while he was cooking, I glanced at it and saw a message from a work colleague come in. I'm going to be honest, this is a younger, pretty female colleague which I have felt a bit of envy towards in the past - however totally trust my hubby (I think) and never suspected of anything between them (apart from she is a bit flirty with lots of men at work - I know as I work in the same place) However DH is not flirty (just nice) and as I say, never suspected anything.
However, got to admit, I know its bad but I wanted to see what she had messaged him, so just as we came to bed and he was in the bathroom, I looked on his phone for the message. However, it's gone!
Please can someone reassure me he might have a perfectly reasonable explanation for deleting this?! He doesn't normally delete messages.. however I also don't feel I can ask him without making it obvious I've been looking at his phone!
Feeling confused :(