Married women out there am i mad?

my husband seems to think so! she is only a friend his excuse. husband worked nights as a bus driver which is 20 miles away from our home, found text messages on his phone fron a women who lives in the area he works he had pictures of her and her children on it the texts werent ual but it was i love you and i miss you i even found little cards with poems on from her in his wallet plus a bag in our garage with a valentines card from her ripped up titled to him as her husband this was 2yrs ago i dont forgive or forget. only now i found out her name but dont know where she lives i would like to confront her to ask what went on what would you do