“You’re probably going to cum in me a lot..” she complained.
“You’re right. You should probably suck me dry, first.
Make me cum in your pretty mouth.”
“Eww, no!” she said, immediately, but it would be better for her to do that and limit the risk, than to have you nut so much inside her. Little did she knew how potent your seed was; all it would take was that little bit, regardless.
She’d proceed to get on her knees and suck your dick, even though she didn’t want to. She’d let you cum, as she felt it throb in her mouth, knowing you were about to -something she’d never done before was let her husband cum in her mouth. She found it gross, but took it as a compromise to letting you impregnate her.
Not long after sucking your dick, she climbed atop. What a bad idea. She knew it was, but having lost the bet, and wagered so much, she’d given up the right to ask you to wear a cover. She sunk herself down on your once again stiff shaft, wincing at the pleasure she felt, taking you inside.
After a good fuck, she felt you cum, throbbing inside her. She couldn’t believe how much she felt shoot into her womb. She’d never have imagined you could cum so much. With the excitement of finally getting to fuck this girl, of course you’d cum a lot. You body instinctively wanted to impregnate her!
She knew full well it would be the case. Having never let her husband finish inside her in fear of getting pregnant, she was sure to be with you shooting this much cum inside her. She felt the warmth as she regretfully sunk down again, taking you deep. Her body yearned for more, while her mind despised the thought of you throbbing again. Her hips moved in rythm, she moaned as she felt you release again.
Source: reddit.com/r/eroticliterature/comments/rmcfx4/in_her_mouth_because_she_had_to