Will Having Sex With a Friend Ruin Your Friendship? 

Everyone knows you can’t have sex with a friend without ruining that friendship. Right? If you have sexual feelings towards a friend, it can only mean one of two things: either your feelings for them are stronger than you're admitting, or what you’re actually feeling is sexual attraction, not friendship. 

But, in fact, science shows that 74% of people who do find their friendships only grow stronger.