I have a serious question

Let's say you have three kids by one man that you were with for 5. Yrs OK .....use brake up then u eventually meet someone else that has no kids u get prego by that person .....u have three boys BTW and that's three csetcions so this one will be the fourth .....fourth csection and fourth boy ......the person ur wit now wants two kids tho to at least try for a girl .....do u wait at least 5 yrs and try to have another one or do u get ur tubes tied after this fourth one even if he wants only two kids??? I don't want him to think I'm not thinking bout his feelings when all he's says is he wants two kids even if thr two boys but at the same time that would be 5 kids!!!! ....what would you do ? Make your SO happy or just do what you want and tie ur tubes???