My dp goes on walking holidays a few times a year, and has done since before we met 3 years ago.
I've always trusted him, and don't often go with him on these trips as I work long hours in a demanding job and also I am a carer for my mum.
I know a mix of men and women usually go on these trips with him, (he basically organises them with his friend) but like I say, I trust him to behave himself and I know he loves me a lot so I don't worry.
That is until yesterday when he thinks I didn't see the "funny side" of a photo he sent me. He was half naked with his top half exposed, with the four women in the group next to him, one touching his chest. He sent the photo to me.
I have been upset since I saw it, and he thinks I am being incredibly unreasonable not to see the humour in it. Am I a miserable cow or should I worry?