system
A chat on subreddit /r/NoStupidQuestions
human
1. You’re not finishing inside her. Its an important step. 
2. You might not be having sex in her fertile dates.
3. She’s on another form of birth control. 
4. One or both of you have something leading to infertility. 
5. You’re both women
gpt
Lmao, might be #5