Should I just concentrate on my work for now, or should I try to get out and be social?

I moved to a new city a year ago and did the commute back home to see my ex-bf often, which took all of my free time I had for socializing. Now we're broken up, I'm 26 and just took a sweet new job. I'm lonely though, and I'm used to having a lot of friends and dating a lot. I've just been a hermit lately but I'm starting to enjoy being productive at my new job. I've never been like this before and maybe this is just new section of my life happening?