Being single's okay. It allows Ты to truly discover who Ты are. That sounds cliche, but it's true. Besides, I CANNOT STAND those people who can't be without a partner for еще than a day.
I want to make sure I understand what your asking. If your asking about not having a boyfriend, girlfriend, husband или wife, it's ok. If Ты are happy single, Ты can be happy as a couple. If Ты are not happy as a single, Ты еще than likely not find true happiness as a couple. Make sense? :)