Bad communication causing riff in friendship

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A guy recently worked closely with a woman1 that he seems to ignore mostly. they chatted and laughed for hours. But when his body accidentally touches hers, he quickly draws it always as though he got burnt. Funny thing is, during the time when he's the one talking, he keeps touching her with his finger on her arm. The work that they do involves walking long distances. he spent the entire day with her. However during this time, he seem to want to make short-cuts or deviate from her when they are int he open. He even mentioned about whether or not she 'was tired and needed to go home'. However, the next day after this, something strange happened. They guy was conducting their club meeting. and at first, he seems cool with the woman1 allowing her to answer some of the questions. Then suddenly, he started acting strangle with her a she usually did. Ignoring any further attempts by her to comment or give and answer. She then got up and left the room, close to the end of the discussion. Later, she came back for the last part of the meeting. After it ended, she got up and left again to go to the other part of the building where most of the members where chatting up. Then, one close female2 friend was sitting there for the second session. She seems (as she usually appear in front of some of the members), to have a flirtatious body language towards the guy. He was also sitting turned towards her int he row directly in front of hers, her legs crossed in his direction. About a minute later. his wife came and sat next to the female2 friend. He later got up to speak to the rest of the member, his body positioned close to the female friend and his wife's seat. The first woman1 at the time was sitting at the front also, but in another row. His behavior was that opposite on the day with the woman1 as oppose to the day before when he was friendlier. The next day, she went to one of their early morning club meetings. He was not there when it started. She sat at the very front. This time, for the first, she had her hair pinned up in the back with longs bangs on each side. Anyway, more people started to come late, including the guy, without her even realizing a that he was there. He sat just two rows behind her while his wife sat on the other side of the room. Later in the meeting, he mentioned that he was not planning on staying for the entire activity, but had to stick around to do some work. When The meeting was over, and most of the members walked out, he stood in the middle of the doorway before she could leave. Then, he unknowingly, moved a little out of the way by the time she was to leave. But before, instead of asking him to move, she just stood there hoping that he would without seeing her. then she just jolted pass him without saying a word of greeting to him. When she was a little distance away, he just shot a look of shock at her without her realizing it, and proceeded with his conversation with one of the other members. This is a very true story. They've been like this for years. What could be happening with these 'friends'?