Most Helpful Guy
Yes you should, especially if your husband has 'responded' to those chats.1
Most Helpful Girl
First of all, how is your marriage? It may seem like a silly question, given how upset you are, but apart from his interest in flirting with pretty women, what does the rest of your relationship look like? Is he a good provider?
Does he spend a lot of time with you? Is he a solid communicator? Is he an available father? Does he have anger issues? Has he ever actually cheated on you or talked about a divorce?
All of this stuff matters, in my humble opinion.