How do you get from mild traffic to solid profitability?

Hi all,
As a quick intro, my name is Dave, and I run a site called seekBromance.com. The code is based on a generic dating site, but the audience is (mostly) straight guys who are simply looking for platonic guy friends who share common interests. Think about the movie I Love You, Man and you've got the idea.

At any rate, the site launched in late August of last year, and it's enjoying modest success so far. I've done all the usual stuff: hired a reputable SEO firm, bought a few Google and Facebook ads, blogged, and used social media - including adding code to take advantage of the Facebook API. As of now, the traffic is holding steady, averaging somewhere between 275 and 300 unique visitors a month. Those of you who are familiar with dating sites already know that this is not enough to break even.

Looking at all this, I decided that my next goal should be to get the traffic up to at least 2,000 (and preferably closer to 3,000) visitors per month. Not only will that much traffic result in a good profit, it should also be enough to be self-sustaining. However, I'm not at all sure how to put together a sensible strategy to get there from where I currently am. Does anyone here have the online marketing experience to provide some advice on this?