Re: Advice needed please
Firstly, as someone who doesn’t know you at all…I gave you my perspective on your situation. And yet now you’re defensive b/c you don’t like my perspective. When you ask others for advice, be prepared to hear things that you won’t like or agree with. 
Secondly, you can call it whatever you want. “developing feelings”…“cheating”…whatever. But in order to have a successfull, happy marriage…BOTH husband and wife need to remain faithful to each other physically** AND **emotionally. It’s a package deal. And right now in your marriage, neither one of you are emotionally faithful to the other one.
Don’t get side tracked by silly terms. Whether you consider what you cheating or not…the 2 options I listed still remain the same.