thats a tough one. No body likes to be single not even the people who are single them selves. Many times people are single because they dont know how to communicate with the opposite sex or express how they feel towards another person.
Been there done that and I am not saying it to make us single people feel bad. I've had partners and I've been single and lonely trust me.
You have to build your network. Build your network of friends and more people. Start connecting with people.
If you are around alot of people you wont feel bad about being single..
Look for help, people think it is silly to ask for help about feeling alone but hey I mean look at how things are now a days
We have things like Eharmony and match.com
People dont connect like they use to now with our technology.
Learn to talk to people, be a persuader, be likable and start being happy today.