Need some advice

Luis • Trying for baby #2
I been with my gf for 6, months an her kid is 3 gonna be 4 we still gotta go see he's dad which is my gf ex wat can I do I know she had a kid before we started talking she loves me an everything but how can I be ok with this where leaving together now an I gotta go w her to dropped of her kid because he was violence tours her before is anyone dealing w the same bs