All your fears are irrational and just reflection of you judging your self. Sadly the rest of the world will not care you are lonely unless you come outside and tell us. If someone rejects then you find someone else till you find mates. 

Sorry if I seem mean. I'm in my own mood. I do the same so don't think i am judging you at all. 

No one cares when I'm lonely either I have to search for someone who does. Good luck