odd-man-out

Lately it seems as though I have been thrust into the world as the trusty third-wheel, fifth-wheel, seventh-wheel, you get the picture. It seems as though ALL of my friends have suddenly found themselves hooked up, leaving me as the only single person of the bunch, which leads to me always being the odd one out (if I'm even invited along, that is). Now, normally I am perfectly happy being single, but when you are surrounded by happy couples flaunting their happy relationships 24/7, you can't help but become a little bitter. It seems as though my bitterness has escalated since finishing my senior show, because I don't have much else to focus my time on. Anyone else feel this lately? Or is it really just me who is still stuck in singledom?