So my partner went to work away which is basically dinners and drinking conference type of thing, when he came back I noticed he put his shirt straight in the wash which is unusual for him. I had a look and found a lipstick mark on his collar and I asked him about it he said he didn't know it was there and he hugged alot of people that night... I feel like that could possibly be true if it wasn't for the placement, I have been suspicious about a certain co worker he went with and I noticed their behaviour was odd after the event as he works from home I hear alot of his usual day in day out so e.g not having as many single calls as their work buddies so they cover for eachother and when in a team meeting they were very quiet and not as chatty this lasted for about a week or so and now it's back to normal... would you be suspicious, has this happened to anyone you know and it was an innocent hug it's just I can't understand how lips touch the neck with a hug I have added an image of the shirt.