If you are still married to him when your hu*****and get his green card, he may apply for follow-to-join benefits for you, which means that he does not need to file a separate I-130 and has you wait till it gets approved. However, at the current stage, he is even reluctant to add you to his I-140 and wants to divorce you. There is no guarantee that you can a green card through him later. Therefore, it is only an option and possibility. It takes longer time than filing 485 together.