NC for this as some previous posts have been outing and I am not sure this is something i want to share with 'the world' yet.
So, recently i have noticed that DH is deleting whatsapp messages from just one person. We always share each others passwords, electronic devices and phones and he is occasionally too lazy to type up messages and emails for himself so will ask me to do so which is how i noticed. As far as i know the person messaging is a colleague from work who is married. DH shares a hobby with her DP as far as I know and the three of them have been out together for that once or twice in the past. When messages come in from her and i am around they are usually something harmless along the lines of when he will next be in at work (she is static whereas he moves around for work).
To give some context - my DH and I have what I always assumed to be an incrediby strong relationship, share everything, and even after many years together are still very into each other. He has on each and every job always been incredibly friendly with all his female colleagues - be they 18 or 80 and he is an incredibly protective person. His behaviour to me has not changed and I just feel stupid for being paranoid but why delete the messages from only her if this is harmless?