Well, it seems that you’ve already resigned yourself to the end of your current relationship; so it seems it would only be fair to get the breakup over with since you’re already asking for suggestions on how to find a replacement. I disagree that people should rush right into a new relationship. I think it is unfair to the next person, as they are often just a rebound and someone ends up hurt.
My most recent breakup was in January after about a year together. I knew it would take some time for me to get over the feelings and to process the lessons that I needed to take from that experience. I joined Meetup.com at about a month later, because I knew I needed to get out of the house but I was not ready for dating yet.
I have made several good friends and had fun adventures through those groups. And I actually did meet someone at an event that I started dating a few weeks ago. Even almost 6 months later, I wondered if it was too soon; but the communication is open and we have no pressure or expectations on each other. I feel better having met him face-to-face rather than online, and I like that we know that we have certain interests in common, since we are in a few of the same groups.
In another response you indicated that you are in the New York area, so the opportunities are endless (to me it would probably be overwhelming, even). There must be classes or lectures you could attend relative to your interests, and perhaps you will meet new friends there and even someone who could become more than a friend.