HE HAS 2 OTHER KIDS?! oh my lord πŸ˜–

Have any of you dated a man with one or more kids from a previous relationship? How do you cope with the baby mamas? I'm thinking if I were to ever TTC with this man, how do i learn to be okay with the fact that this is only new and special for me? and that hes experienced it all twice before? He is an amazing man and id hate for his kids to be a dealbreaker or barrier.