It is critical for singles to use their time wisely. If you are single, I'd encourage you to run as hard as you can after the things of God and if you see someone of the opposite sex keeping up with you, give them a second look! It is important for singles to get rid of any baggage they may have as marriage is a mirror that will only amplify their current state that they're in.
Matthew 6:33 But seek first His kingdom and His righteousness, and all these things will be added to you.