She was not "nuzzling", she was talking. They were not hugging, kissing, or anything. That WAS Stefano's room. And Ben jumped to whatever conclusion, refused to listen to a thing.
As far as Abby, I hated that she was begging and pleading.......and in front of Chad. But while I could see Ben getting angry, his reaming out Abby in front of Chad and hospital staff was uncalled for. He could have asked him to leave.....
But.......all Abby had to do when she saw the startled Chad react to the empty room, would have been what she did initially.....say he was downstairs for tests......and go on her way. She didn't, she had to once again state her faith in him, etc. But, she was the one who convinced him to see Marlena, and arranged it. Yes, she could ask that question.....gotten her answer...and again, have left. So.........she blew it.
Time for Abby to learn the truth about her pregnancy test, whatever that may be.