i know people who are virgins in their mid 20s aswell. I play a pretty good wingman when i want to be. In my case i've done substantial work at getting these people to "mess around" with people from bars and such ...
If you are by yourself it can be difficult to pick up a girl. You might need a guy to go with you to the bars/ clubs to help you out because girls rarely go alone ... and if they do... then u can swoop in on them early on in the night and take them home...
but i digress. having a wingman (or wing woman) can help out alot. Wingmen can help you meet a group of girls.... a wingwoman can slip little info in about how you are great in bed, or if you are big.
If you are literally looking for a girl to be in a relationship with, to date, and THEN have sex with, then you will need to go else where for this. Join clubs, gyms, be more proactive in book stores, the library, and even in other random stores.
The biggest thing is getting your mindset to go after women. Looking for the little cues... and most importantly just putting yourself out there. You can't meet people if you are at home by yourself....