Originally Posted by Derbylicious
If it's the second then it sounds like you need to put yourself in the position to meet more people...
This. Which can be incredibly hard to do if you're comparing yourself to someone else, so make sure you're going out separately.
And finding out that everyone else is sexually interconnected is a horrible, isolating feeling--I've been there, and I felt like a sexual leper--so try to socialize with people outside that circle. It really does help.