Hello I need help and some advice. 

On December 17th I caught my husband at a bar with one of his co-workers, holding hands. 

He told me that nothing was going on that he just crossed the line that one time and nothing like that has happened again.

However he has continued to go out to drinks with her, text, and call her several times a day. Now they do work together but the texts are not just work related and are getting more and more personal. 

I have seen them going to lunch together, alone in her car and he tells me it was more than just the two of them, but it wasnt, he has gone out alone to have drinks with her and told me its a business meeting, even though they are together at work all day. 

I can not get over this, I have a horrible feeling that something more is going on because he keeps being dishonest with me about their interactions and their texts are still very personal and flirty. 

We have only been married a little over a year and I hate to end things over something so trivial, but I dont want to sit back and have a full on affair start right under my nose. 

He tells me that he is DONE having Ashley arguments and for me not to bring anything up again about it. She is married and has 4 kids and we are married, with his prior marriage and my prior marriage we each had kiddos prior.

Sorry for this being all over the place Im just so confused and torn that I dont know what to do.

Any advice?? Thank You !!