Being aware of why humans are motivated to have sex can result in a more fulfilling love life, suggests a study by the University of Toronto. The researchers classified sexual motive into two main categories: positive (“I want to feel closer to my wife”) and negative (“I don’t want to feel guilty”). People who had sex mostly for positive reasons reported higher sexual satisfaction and vice versa. “When people have sex more often for negative motives, bad outcomes build up,” warns study author Dr Amy Muise. If positivity-driven sex is hard, consider seeing a sex therapist with your spouse.