It's hard to make close friends, especially as you get older. I am a fun/friendly person, but I don't like to just 'let people in' very quick. I also think my depression hinders my ability to actually try to make friends. I've had a few good friends since childhood which I talk to, but not very often. Had a best friend of 8 years (we shared everything, spent 24/7 together) but had a falling out about 7 months ago. Never really bothered me not having many friends cause I was happy just hanging out with my former best friend.

It's hard to find someone that you can share anything and everything with. You aren't alone, there are many of us who are in that boat with you. The best way to make friends is go out there and meet people at various places/events/clubs. I know it's easier said than done though.