DON’T DATE YOUR BOSS!
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 proceed cautiously.
I am aware of what really happens however in some cultures and environments. When a boss has a crush, it is a serious problem because often these attentions from the boss (many of whom are married) are really unsolicited “intense, sexual” advances… so in such cases, get ready to quit your job! Just my candid opinion, feel free to disagree or state so if otherwise.