Yeah it's difficult treading the line isn't it when cutting. The trick is to have the calories just right so you can train with intensity and lose fat, but not effect you so badly that you feel **** and even worse, lose muscle. Usually for a 7 day period I have 5 days in deficit , e.g. mon-fri, 1 day with extra calories, saturday and one day neutral sunday. Works well for me.
Yeah ive also got a date on sunday so i know what you mean, just eat what you want without making a fuss but dont order ****e loads of extras like sides. Enjoy the evening but don't go mental.