My husband only wants one more child but I am afraid I will want another after: Advice?

Could you please post? I, mom, have always wanted four kids, and Dad was happy with two, so we always just enjoyed the two amazing boys we have, but now he wants another (I love it), but I hate odd numbers, and I am so worried I will want another and he won’t want another with me as we have been so set we wouldn’t have two in diapers unless it’s twins at the same time and we said we were done at 32 which is only two years away for me. Do we have the third, or just enjoy the two boys we have??