BF and I have been dating 4 months, so still a fairly new relationship. It's safe to say we have fallen head over heels for one another, both exchanged I love yous, booked holidays, we see each other 3 - 4 times week. We've met one another's family and friends on several occasions.
I think its important to stress that I have never had any doubts about him up until this point. We know one another's phone passwords so very open in that regard, never really cared to hide or hidden anything. Anyway, earlier on I was on his WhatsApp sending photos to myself that we had taken on his phone. I noticed a conversation with a woman he has never mentioned before, but I didn't pry or read it as I have (had) no reason to mistrust him or think anything of it. This evening when he was scrolling through his WhatsApp I noticed that the conversation had been deleted. Only the conversation with her, so it cannot be put down to having a phone or WhatsApp clear out.
I have done a bit of digging and it appears she is married and also lives a fair distance away. I am very doubtful of physical cheating, but I am suspicious that maybe there was some inappropriate conversation or flirting. Why would he delete the messages?
Should I ask why he has deleted it, or wait and see if anything more comes to light over the coming weeks e.g. another conversation appears?