Go start a project or something; have a short-term target to achieve. For instance, finish reading a book or cultivate a plant from seed.

For me, i've set my target to visit Tokyo next year. So, i'd make myself busy immersing the culture and read Japanese handbooks till next year, when i fly there alright.

Single here as well; like ak_suknat said, i rather have someone curse me to not liking a girl, it's a poisoned chalice really