How do I (30M) explore a possible breeding link with my girlfriend (28F)?

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The original was posted on /r/sex by /u/King-Mugs on 2023-06-27 17:04:39+00:00.

I’ve been with my girlfriend for 4 months and she’s amazing, the relationship is great. Sex has been very good, we’re pretty good at communicating in and out of the bedroom. The other day we were talking about future plans and the idea of having kids together came up (has come up before). She’s on birth control and jokingly asked when I was going to get her pregnant and I jokingly responded something like “couldn’t you tell I was trying to get you pregnant last night?” Then made a joke about getting her BC out.

She said she didn’t know why, but that me saying that gave her some feelings. Like a “oh, what’s this now?”. So I noted that and then next time we had sex and I was about to orgasm I whispered something like “fuck I want to get you pregnant”. And let me tell you, she dug her claws into my back. And weirdly enough I reeeeeally seemed to enjoy saying it? By male standards that was a really long orgasm for me.

Did we stumble on to a breeding kink? She’s been on birth control our whole relationship, I’ve finished inside her before but specifically saying that seemed to do a thing to both of us.

Are there other ways to explore/have fun with this? I didn’t even know this was a possible kink until I looked into it. Anyone else have similar experiences/interests?