some people say it's better not to have affairs with your colleagues unless they're on the same level and you don't work together. Obviously when you fall out due to her unreasionable sexual demands there will be career trouble for you both.
If you do go down that road, just be very careful, as it was the opposite with me when I worked for a building firm.
I was the only female worker there, the guys that I worked with were great, we got on so well,they made the odd little remark, but it was part of the job, and they were inoffensive, the actual problem was the 'foreman'
To cut a long story short, he would not take no for an answer, and wouldnt leave me alone, I tried laughing it off, but I had to actually tell him to ferk off or I will take it further.
When he knew that I really wasnt interested he made my life hell, gave me the most krappiest jobs, sent me miles away, and picked fault with every job I did.
It got sorted out in the end, but just imagine how it would have been if I had of succumbed to his advances, and the 'affair went sour', my life would have been much worse.
Looking back, I dont think it could have been much worse, as he was a right barstaard to me,but I still wouldnt have done anything with him, as you know that is the kiss of death when you play around at work.