A man right out of college in his early 20 needs to focus like a laser on his career. What ever it is that you decide to do... FOCUS on that. I've seen and known men that after college never fvcking grow up, they continue to party and drink and they get out of shape and start looking pathetic. Put that testosterone to good use. You really shouldn't be wasting time chasing chicks your age because the women worth a fvck are going after dudes that are more established in their 30s and 40s.
Keep approaching and making dates, but do not do this at the expense of your career. When you hit your late 20s, then join not for profit groups on issues you care about, they usually have great fundraising parties and events, this is where I meet most of he women in their 20s that I go out with... start going to local chamber of commerce networking events, this is where I meet most of the quality chicks I date in their 30s and 40s.
The worst thing a man can do after he graduates from college is move back in with his parents. I would move far away from friends you knew in high school and get a fresh start in a new city and focus on building your career. Cut back on drinking... no drugs... make money. Also keep in shape, work out and eat properly.