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