Best way to handle romantic relationships at work?

My job is definitely the most important thing to me so I wanted to get opinions on how others go about this. Currently, I prefer to keep these two things separate because of stories I've heard of others at work... I just like doing my job and being friendly to people, and enjoying my precious time off. The only thing that will even get me to consider getting more personal with a coworker is sex, and even then there's a whole pros and cons list I go through depending on the person and it usually ends up not being worth it, the only times I've consistently been willing to go for it is if she was super pretty, and that's because of how important sex is to me in a relationship, as I see it, if there's no attraction, there's nothing. When at work I prefer to only try going for women that show attraction first, and that usually involves non verbal cues(one of my views on romance is that the more I talk to someone the less interested I am, if there was attraction we wouldnt be talking), though now that I pretty much know everyone I'm just waiting to find someone where there is mutual attraction but I'm in no hurry and like being single.