My Husband Is the Perfect Kidney Donor to His Mistress

The weight on my chest made it hard to breathe, like someone had placed a boulder there.

David must have already taken Ava to Central South. They hadn't found a match.

This was almost certain. The first step in kidney matching follows blood transfusion principles, and Ava was type O.

Type O is the most common blood type, making up about 47% of the population.

Type O is called the universal donor—A, B, and AB recipients can all accept type O blood without rejection issues.

But as a recipient, it's the opposite. Type O patients can only receive type O blood and organs.

This means that among patients needing kidney transplants, type O recipients have the lowest chance of finding a match—only 47%, matching their population percentage. Other blood types have at least a 70% match rate, with AB having nearly 100%.

Kidney donors are already incredibly scarce, and matching is complex. Ava's blood type automatically eliminated 53% of potential donors, making her chances of a match practically zero.

For Ava to get a kidney, there was only one real option: directed donation.

Someone with type O blood would need to specifically donate their kidney to her!

That's why David had come to me.

"I'm type O," I said, taking a deep breath and holding his gaze.

Lying would be pointless. If David was asking, he already knew my blood type—we'd been married for five years.

But precisely because we'd been married for five years, even though I already knew what he wanted, I needed to hear him say it out loud.

Could you really say it, David?

He could.

With a casual expression, he said, "What if you donated one to her?"

I felt ice run through my veins as I stared at him in disbelief.

David looked at me intensely. "You have two kidneys. Giving her one to save her life isn't that much to ask, is it?"

Something caught in my throat. Finally, I managed to speak. "David, have you lost your mind?"

"Lost my mind how?"

David's face was full of self-righteousness. "You're a doctor. Isn't saving lives your calling? Don't you doctors always say people can live normally with just one kidney?"

"What, is that just something you tell other people to convince them to donate? When it's you doctors' turn, suddenly it's different?"

I looked at him sadly—this man who should have loved and protected me was scheming to take one of my organs.

Yes, with proper diet, lifestyle, regular exercise, and checkups, one kidney is enough for normal bodily functions.

In fact, some people are born with just one kidney—about one in every 1,200 people—and most never even know they have a solitary kidney.

But why should I? Why on earth would I give my kidney to my husband's mistress?