I was pretty much the same way till about 43 or so...I did my own thing, but I still wanted a gf or frends to do things with and if there was a lapse I felt a bit hollow.

Like I was lacking something.

Then around 43, I was thinking about things and TBH...No bullshit I came to these conclusions FOR ME.

Not saying we all should think this way or that I'm correct...But it's correct for me and my lifestyle.

1. The more people in your circle, the more they end up sucking up your Positive Energy with their issues, because we tend to be empathetic to them and absorb their sadness, anger or troubles.
2. That thing where we THINK we need people around us is a lie...What we need is QUALITY people around us.
3. If a person is unlucky?  STAY THE FUCK AWAY FROM THEM.  Sounds cruel, but I have seen many people sink because they become responsible for another person who's luck is ALWAYS bad...A LOT OF THE TIME it's self induced troubles WHICH THEY REFUSE TO CHANGE.
4. Anything I need I can buy...Even as a temporary break...Need sex?  I can buy it...Need fun?  I can buy it.  Need to just relax?  I can buy it.  Will it be 100% real?  No...Is it a BandAid?  Sure.  But if I'm bored, I can drag a few local friends to a strip joint, buy a bucket of beers and a bottle and just enjoy and laugh or honestly pop some gummies, make some great micheladas and groove to some 80's music at home.
5. A little cat or dog you CONNECT with is worth it's weight in gold...With my Old Lola Dog I have never felt alone...She is my familiar and when she passes I will be devastated, but I know  that she lived a very long and very healthy and happy life and that soothes me.

Once you see that IF YOU AREN'T PROBLEMATIC then most of your problems are brought by others...Then it's not about being an introvert.

I go out, I still throw dinner parties, I travel...But I also enjoy JUST  being at home relaxing with sweet music playing in the background.

You can want someone, but you should NEVER need someone...The minute you do then there's a Power Exchange and things usually NEVER go well.

Once you can be alone, is when you'll be able to pick those you want around you...Not just take some one who is riddled with issues.

When you're young sometimes we latch on to cheaters, assholes, or just negative people because we believe that as friends we have to put up with people's bullshit.

Repeat after me "No you fucking don't." 

I don't care if it's a friend, co-worker, FAMILY, your boyfriend/husband, wife/girlfriend etc...If person is drama and loves to complain, but never does anything to solve their issues?

Fuck.

Them.

You're better off just being alone till you find what you need AND as soon as you internalize the fact that you don't really need anyone is when what you needs will pop up.

STOP being a martyr.

https://www.youtube.com/watch?v=c6Bkr_udado