I found out by accident that my ex was cheating,as he was definitely one of those guys whom NO-ONE would see as a cheater.....never looked at other women...not very passionate....always worked hard.
At the time-we both had the same mobile....one night I had texted our daughter-she was going through a very difficult and wayward phase...and I made sure I knew where she was every night-just to touch base. I was in bed reading,when my husbands mobile text alert went off. My immediate -almost instinctive -reaction was that it was Cassie responding on his phone because mine was off or something. I just went-and looked at the text.
It was something along the lines of "oh I guess we are through now,as you've not called...blah,blah"....I thought it was a 'wrong number'....and ignored.....until another,very similar text came through 10 minutes later. I just took the mobile downstairs to my husband-and handed it to him-saying "your mobile has rung..."
I NEVER said a thing to him about it......and I left him almost a year later......but before I left him,I DID have a look in his phone to see if he was still 'involved'......yep he was. This was almost 6 years ago-he lives with her now.