To expand on my phrase "interpersonal relationships are out"...

Talking to people, especially the opposite sex, strongly exercises many subconscious mechanisms of our brain. Language, intonation, emotion, posture, you just can't process everything rationally as it comes at you in parallel at high bandwidth. Try dancing from first principles; you'll fail. If you possess no natural talent for it, you have no hope of winning an individual encounter through rationality. You can win by preparation - slowly develop such personal qualities as confidence, empathy and sense of humor. I have chosen this path, it works.