You are one of the lucky people I think who is comfortable spending time alone. Alot of people out there cannot do this. So first off no you are alone secondly if you want to let people into your life then start small hang out with people at work. Or ping your school friends to catch up on old times or join a book club.

You do not have to say something to be interesting sometimes just listening helps. Make sure you let quality people into your life this helps coz not everyone has your best interest. Socializing is like any skill it takes time to get comfortable and don’t be in a hurry you will get there.

Be positive and please be open to new ideas.