Is it weird? Have you noticed any shifting dynamics or not at all?
Personally, I think it can feel lonely on occasion. I have some best friends that will confide in me about someone they're still getting to know. Wondering what to text back, laughing, and having fun with the situation. After a certain level of commitment, those things end. You just don't talk that way about a partner you're deciding to become a family with.
It's hard to explain and I don't have any issues with FH now but relationships can have ups and downs. I don't feel like I have close friends that get it, even though I do have close friends. So when things aren't perfect it feels lonely.
Another thing I've noticed is that there's an assumption that I don't have any problems. Because on paper: I'm engaged and things are good. I have some health concerns that have become an additional variable for when we ttc in the future. If I talk about it I get brushed off like "I'm super single, you can't complain."