<human>: I tend to ruminate on things that cause stress in my life, so I'm not quite sure if this problem is ridiculous or not, but I feel that posting here might make me feel a bit better either way.

Me and my girlfriend have been together for 7 months and I recently proposed to her (I know, I definitely rushed into it). I thought my feelings were in order, but ever since, I've been having doubts. 

I've only slept with 3 women in my life, including my fiance. Meanwhile, my fiance has slept with tons of guys. And hearing about all the things she's done, at a younger age than me, mind you, makes me think that maybe I should have slept around a lot more before going into something long-term (and potentially permanent) like this. I think the best way to describe how I feel is "sexually unfulfilled."

To make matters worse, my gf no longer seems to have the urge to experiment with me sexually. When we first got together, we would talk about all the things we wanted to do: things like bondage and threesomes, etc, and she was enthusiastic about it all. But when I've asked her about any of it recently, she's no longer interested. 

It was hard to get her into a sex shop for even a simple sex toy, and a threesome now seems completely out of the question. She's done this stuff with other guys in the past though, so I'm confused as to why she doesn't want to experiment sexually with me as well.

So what's going on here? Am I overthinking all of this, or is this kind of thing something I should be truly concerned about. If not, is there a way to make these feelings go away?

Whatever the case, thanks for reading and for any response that might get posted.

Summarize the given text in a few sentences.
<bot>: I rushed into proposing to my gf and now I'm starting to think I should have slept around more before going into something long-term.