me and dp have 2 children and we have been together 6 years lately he's been spending more and more time on the pc he said he's on gaming sites when I looked today as he didn't come to bed til 4 he's joined an adult dating site and is talking alot on msn he's become protective of his phone too I can't see him being unfaithful as he's always at home can someone be unfaithful using msn. Im so scared right now is he planning on leaving me I really though we was happy now this. Please what shall I do