I think if you are single and of an age when most of your friends are coupled up, your social life becomes different. I've been single for a long time (was an OW until recently which in some ways is single but is even worse than being single).
My social life is now reversed from when I was younger, in that now I go out almost every night of the week but Fri - Sun is my former Sun/Mon/Tues. It's not impossible to go out on a Fri/Sat but it just requires a bit of forward planning as most people in couples are busy at the weekend - often with other couples.
What initially seems very traumatizing quickly becomes normal. The weekend becomes much more "me" time. What is great about it is that you can do what you want. Plan to visit friends who live in cities further away. Go and stay with your parents. Have a weekend city break to Paris. You don't need to do this every weekend - just once in a while when you feel like it. Trips away are especially fun because your married friends will ooh and aah about your glam life and how they wished they could just drop everything and have a weekend in Barcelona when they felt like it.
Something I really love is storing up "bad" (By which I mean guilty pleasure) pre-recorded TV, getting a nice bottle of wine, cooking myself something fabulous and settling in for a Friday night spoiling myself and watching what I want to watch.
Another good thing about being single is that you can really have fun and improve your cooking skills because there is absolutely no "dinner party/guest" pressure. If the grand design doesn't work, no big deal, chuck it in the bin and start again or order a pizza.
There are a lot of really, really good things about being single. Scroll through some of the relationship threads here to see what I mean. Would you rather be where you are right now or dealing with some of the problems people in relationships post about here. No situation is perfect and all have advantages and disadvantages. But, for a woman, being single has a lot of advantages.