Would you leave your husband if?

Would you leave your husband if? If your husband told that he was going to someday leave you because you are unsure if you want children, also he states in the very near future he will be looking  for someone for a one night stand just to have his child? My husband told me this a few days ago. He told me that time is running out and I better make a choice kids or he will leave me. I am not sure if this is a scapegoat for him or??? however, just stating that he will soon sleep with someone is something I would never tell him. He also stated that at times I make him sick, and that he hates hearing my 20 yr daughters fathers name. I have been with this man for 10 yrs and away from my daughters father for 14 yrs..we have no contact for the most part...etc but this has been and issue since we met...but he never told me that he hates hearing his name. He also stated that, I could have a child with him and not with my own husband blah blah . He is 43 and I will be 40 in a few months...not sure if I want to start all over?    I just listened and did not react...I was kinda beside myself when he stated this however, its been weighing heavily on my mind that I should just let him go ..because I am not sure if this what I want. We both have children from another relationships and they are grown and off to school. I did want children in the past however I have trust issues.