We are so different

My friend and I are both 21. And we also each have a kid. She's more on the wild side I would say with an extreme sex drive and im more on the calm side with a low sex drive. Her boyfriend is 19 years old, my fiance is 34. She goes out often and I stay home with my family. My fiancé also has kids who live with us part time. Some times I wish my life was similar to hers and I wish my sex life would be more active. I am not jealous at all, I just ask myself how did I become this person I am now? I used to be just like her. But now I'm a totally different person. I only hang out with older people as she's still hangin out with our high school friends. When we text, she's either done having sex or about to. They are seriously the horniest couple I've ever met. I don't really have a sex drive like that and both my fiancé and I crave sex once a week or every two weeks. We were never like this. We used to have sex A LOT. Now it's all stopped and now all we are, are parents. I just feel so boring compared to my friend. She's still able to go out and have fun. While I'm at home raising kids and cooking and cleaning and being a wife almost. Well, basically. Also, every time we talk she says she's about to "FUCK" or she's done "FUCKING" and it really irritates me when she talks like that. Can't she keep that to herself or if she wants to tell me why can't she just tell me she's going to have some intimate time. Ugh.