Couple married for 15 years, 2 DDs of 14 and 12. DH has had one affair approximately 9 years ago and nearly had a second 7 years ago. DH and DW (for various reasons) haven't had sex for a number of years now - not related to the affairs, mainly the DW just doesn't have a sex drive. That's the background.
The DH has a friendship with a woman he works with who is about 10 years younger than the couple. The DW knows and gets on well with the woman but she is primarily the DH's friend. The DH confides in the woman about personal issues, but they do not spend any alone time together. There is no chance of a physical affair happening as it stands. They send each other 'cute' text messages and talk about each other's personal relationships etc. They have a lot in common.
The DW is not bothered by this relationship, sees it as just a friendship. Objectively though, does it sound like the beginning of an EA? Full disclosure, I am the DW's friend and she mentioned this all to me recently and I don't know if I'm reading too much into it. I don't want to say to her to be wary if there's no need.