You're welcome Juliane. I try to keep my comments shorter rather than longer and do some editing, so I deleted quite a bit of my comment yesterday. Continuing on...

When you are a kid, you meet a lot of new people each year in school. Dozens to hundreds each year. If you went to college, you met maybe hundreds to thousands each year. You were all going to the same schools and had some of the same classes, so you had some mutual interests built in. You were required to interact with dozens to hundreds of those new people each year for 12, 16 or more years. How many friends from those hundreds or thousands of new people - each year - did you become friends with and of those how many did you become close friends with? How many did you stay in touch with 10 years on?

My point is that if you feel like you are not making friends like you used to, it is because you are not meeting people like you used to. Give yourself a break. Like finding a girlfriend or boyfriend that then becomes more it takes a lot of meeting and moving on. That's life. Roll with it.

What doesn't work is forcing it. Whether platonic, romantic and/or sexual, if it is going to last you have to plant some seeds, then tend them (don't forget that!) and give them time to grow. You'll see then if what is growing is what you are looking for, and the other person as well.

Responding specifically to what you wrote, if you want something deep, you're going to have to open up a lot, and find someone else who is willing to open up a lot. You can be sure that your accepted rates of opening are not going to be completely aligned (i.e. you might be cool discussing your colonoscopy with the guy you just met at the coffee shop 30 minutes ago. He might not be - unless he's a proctologist). That's life. Roll with it.