He wanted to turn the lights off

So I've been casually 'seeing' this guy for a couple of months now and we've had sex quite a handful of times and just as things were kicking off he says 'hang on let me turn off the lights' then proceeds to turn them off. I mean the light from the television was on but still... I know I'm overthinking it but I don't know now I'm super self conscious for the next time we have sex. Thoughts?