@karen85,
I didn't misunderstand, you've been going there for 10 years.
That makes you old enough to know that if someone is in a relationship, then they are not available.
You are also being obsessive, you are listing things down 1-10. Do you not love yourself enough. You don't need to list anything, you establish if they are available, no, cross that one off. If they are available, trust me they will come to you and you can then decide if they are worth getting to know or not.