Your wife's always been pretty open and honest. So now she's just telling you how it is.
You do wonder some times what he looks like, because your kids don't look very much like you -- which is not really a surprise because she has always made you use protection when the two of you have sex (which has never been very often). In fact, she has NEVER permitted you to have sex with her without using protection. But still she has become pregnant thee times.
Sometimes it's better to keep it beetween us 💦