You want her

Good question. What do you want from a marriage?
You want a woman who likes you, obviously. You’d never get married to a woman who doesn’t want to be with you or does so against her will. You also want her to have sex only with you and no one else. Well, maybe she can with other women, but the only dick that should go into her body is yours. But most importantly, you want her to be your equal.
You will want to talk to her about all your magical discoveries. So she’ll have to be smart.
You will want to cast spells with her. So she’ll have to be a magic wielder.
You will want her to be just as capable as you are. So she’ll have to be talented.
The longer you think about it, the more you realize Doe has everything you want from a wife.
You release your grip on her hips and say, “I want you.”
Doe smiles warmly at you and says, “Then make a baby with me.”

Doe grabs her nightgown and pulls it off her. In just one movement she reveals her body completely. She then grabs your hands and intertwines her fingers with yours. Then, as the two of you hold hands, she starts riding you again.
This time you don’t try to hold back. You allow your orgasm to build. Let her draw semen from your body. You even cast a spell to increase sperm production in your balls.
When you are close to orgasm you say, “I’m going to cum.”
“Stay inside me.” Doe says. “Fill me up with your baby. I love you, John.”
Then Doe casts a spell. One that causes her skin to light up. Bright white light appears from every inch of her skin, causing her to light up the room. For a moment, you feel like you are getting fucked by an angel.
That is when your dick finally can’t hold it in anymore and blows its load deep inside Doe’s pussy. Doe first moans in pleasure when she feels your sperm flood her womb. But when you keep cumming she starts moaning in surprise.
“Ooooh. You’re not stopping. No wait, I’m gona …” Doe says.
But then her womb overflows. Excess sperm travels back down her vagina, covering your dick. Then you shoot another large load into her, causing sperm to burst from her pussy and splash all over your balls.

When you’re finally done cumming, Doe gets off your dick and checks the mess you’ve made between her legs.
“Oh my god.” She says while her tails are flapping excitedly. “I am so full.”
You smirk and say, “With any luck, you’re going to end up a lot fuller in a few months.”
She looks at you, but no words are necessary. Both of you are imagining her with a huge pregnant belly.
“Now I just got to hope I have an egg ready.” Doe says. “Otherwise we’ll have to do this again.”
You take one of Doe’s hands, place it on her lower belly and say, “Let me teach you a spell.”

After explaining how it worked, you show it to her. You expand your mind to her womb and she follows your example. You see her womb, as does she, full of wriggling sperm cells. Then you guide her to her ovaries which have not produced any eggs. Then you show her how to make one of her ovaries mature an egg and poof, she’s fertile. Then you show her how to guide a male sperm cell and bring it to her egg. Within seconds, they have merged.
“Congratulations, Doe.” You say. “You’re going to have a son.”
After that, you feel Doe’s attention travel to her other ovary. As you watch, you see it ripen an egg as well. Then she finds a stray female sperm cell and guides it along her fallopian tube, traveling faster than any of her brothers and sisters. And suddenly, she is inside Doe’s other egg.
“Congratulations, John.” Doe says. “You’re going to have a daughter.”
The both of you giggle and kiss.

When you’re done kissing Doe gets out of bed. She bends over and picks up her gown from the floor, flashing you her sperm covered butt. Her tails are spread out akin to the feathers of a peacock. Three fully grown ones and a fourth smaller one comically trying to match itself to the others.
“Hey, Doe.” You say. “You have a new tail.”
Doe reaches behind her and grabs her tails one by one until she brags the newest.
“Another? Geez, if these things keep growing I’ll be more tail than body.”

You and Doe both get into a tub to wash yourselves. You use a water spell to summon some water and join it with a fire spell to heat it up. While bathing There is something that bothers you. Something’s gnawing at you and it just gets more and more uncomfortable.