Undecided to get married again or not.

I’m having a challenge deciding if I want to get married again. I have two children from my previous marriage and am now dating someone I want to spend my life with. She doesn’t have kids but wants at least two. I just don’t feel a need to start over with children again. However, I don’t want her to feel unfulfilled in life if we didn’t have any. Any advice on working through this dilemma would be helpful.