Tragic for folks without a friend circle - your main remaining company is basically your partner which, unless you delight in each others company, isn't great.
I highly recommend delighting in each other's company.
You can still lose your partner and you'll always be better off having friends in that case.
If I lose my partner, the best thing I could've done is delight in her company and give her my focus for what was her entire life.
Of course you should do that ideally, but you shouldn't use it to substitute for friends.
Have you ever had a long-term romantic partner whose company you enjoyed so much that you felt tempted to substitute it for that of your friends, and have this feeling continue consistently, over many years?
And some people don’t even end up with a long term partner. The outlook for some is incredibly bleak.
Have one of those weddings where you say “my spouse is also my best friend” then you don’t need a friend group too