He is not choking her, she's crying for another reason, he's asking if she's alright and helping her.
When itt was ion pencil my friends thought they were various couples.
It is not Romeo and Juliet
nor Sansa and Joffrey from Game of Thrones or Cersei and Jamie
They are Byron and Evey from my story Guiltless Danger which will be renamed later when i think of a better title.