So.. I can't sleep because this is keeping me up.. please help with advice

So me and my partner where proceeding with foreplay and no matter what he tried (yes it felt good and nothing bad on him ) I just couldn't get in the mood .. is it bad that I feel like an absolute tease ? , it felt good and all it just seems my mind and and body was not even the slightest bit intrested, could this be due to the fact I'm overwelmed and stressed..? Even though we both wanted to have sex I just couldn't. .