My dh and I have recently started fertility treatment with lots of tests and things last year, it was quite a stressful time for me and I had some depression and anxiety. A few months ago I found some messages of dh and a female from work who I knew were friends. The messages were normal apart from a couple, one was inappropriate banter and one was slightly flirty birthday message on her side. There was none about meeting up or feelings etc. He wasnt flirty in them. He doesnt really flirt. I had already read the messages and when I asked about them he panicked and deleted them. He apologised and for the inappropriate banter and said he didn't think they were flirty. To be fair most were about work or family and children. I have been funny about messages in the past and that may be why he deleted. He has stopped the messaging and doesn't hide his phone. Always tells me where he is, is quite reliable. Messages a lot on nights out. Did I overreact as I don't want this to create trust issues? I don't know if I am feeling more vulnerable because of the treatment.