Relationship Question

Warning bells are starting to sound. If its not something at the moment it could turn into something. I think its easy to relate to people of different ages but thats not where the red flag is going up for me its the PHOTO! Now I might send a photo of a new hair do to my mum or put it up on FB but there are not many men i know who would send a photo of a new hair do to a friend they dont know that well and is 12 years younger than them unless for example the went for a drastic change from normal hair to mohawk and its something they shared in common???? She might be flirting and he might think its flattering to be getting the attention from someone so young. My advice is watch it if your gut is telling you something then trust it. At the moment it could be innocent but a situation like this could change very quickly. I would talk to your husband and tell him to watch himself she could get the wrong idea. keep a close eye, maybe change up your routine and spend more time together ask him to explain the relationship and maybe meet her to see what vibes you get and if still not convinced tell him to stop contact