Why?
The downsides are more than the upsides to this situation and being aware of the odds of success also helps. Now, if you must accept your boss’ advances (and not give in because you have no choice) and start a relationship make sure you have another job lined up or it has enough promise for a future. In order words, make sure the relationship is a win-win. Here’s a fact only about 1/3 of such relationships succeed so please
http://www.9jagreat.com/2017/07/dont-date-your-boss.html?m=1