Would this make you feel odd

So a few months back when my fiancé canceled our wedding he kept saying how he loves this guy friend of his and I thought nothing odd of it because I mean it’s brotherly love. Well we all went on a trip with him and some other people and my eyes really opened. My boyfriend and this other guy kept disappearing into the woods and when everyone went to sleep he would stay up with him until 4 when everyone was in bed by 1:30. The first night he came back after being in the woods with him scratches all over this shoulder like deep ones and he was wearing a shirt. He said they were just sitting down talking until 4. It was suppose to be a trip for us both and he kept disappearing with him and not even hanging out with the other guys. Everytime this guy came up by the fire my boyfriend would take his hand off me and wouldnt love on me at all. The whole time both of them were like “I love you” to each other. Would this strike as odd to you? Doesn’t mean I won’t support him I just need another set of opinions.