If you mean expectations of others, then I'd say that mental guidelines on your own reactions will serve you better than those expectations. Don't expect anything - they could be a Superman, they could be an asshole. There is no point trying to paint an image in your head of something you cannot control.
Instead, map out how you will react to certain situations, because that is something you can control. Say to yourself, e.g. "If he's an asshole, I will get a call from a friend or fake one and leave." Saying that will make you more decisive to take action should it come to that. Or "If he's absolutely amazing and we are really getting on, I will probably make out with him" - set your own boundaries, nobody has any right to judge you apart from yourself.
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