This is a very immoral practice.
Besides, don't you feel a little lost when you are only 19 years old and are a mistress to others?
Under normal circumstances, it is difficult to have a good result when being a mistress to others.
So don't do this again.
Besides, since his wife hit you, you can find this man and ask him to find a way for you.
You can also make an agreement with him that you two will break up in the future, but now you are facing great difficulties, and he must give you a solution, otherwise it will not do him any good.