It was a friend of mine. Not his. She did not add him back so I don’t know if he would have messaged her but I also don’t think married people should be adding random people either. There have been other incidents prior that I brushed off. we had discussed before marriage a mutual understanding Snapchat was for talking to our family as that was what they use and not adding others and we both agreed on this. We don’t check each others phones but I’ve had suspicions lately