Take responsibility.

Despite Gemma being on birth control, all those countless times you cummed inside her must have been enough to break through. Of course, a pregnancy test wasn't necessarily accurate, but you accept that in all likelihood you've impregnated Gemma. Your head and heart begin to swirl with mixed feelings, but to your surprise... most of them are... positive. The fact that you're not immediately repulsed by the idea makes you rethink everything about the relationship. Maybe you do have feelings for her, and you were just lying to yourself the entire time. It just took this moment to knock some sense into you.

"Do you want to keep it?" you ask, pulling her in for a hug.

"I-I think so..." she says, burying her face in your chest.

"OK," you say reassuringly, stroking her hair.

A few days later, you accompany Gemma to a doctor, who confirms for the both of you that she is indeed, pregnant with your child.