He’s battling low self-esteem
Sometimes, it’s not about you at all — it’s about how he sees himself. A man who feels unattractive, incapable, or uncertain in the relationship may shy away from closeness. His quietness at night may hide insecurities he can’t bring himself to confess.
He’s holding onto resentment
Anger rarely vanishes; it just changes shape. Maybe an old argument was never resolved, or he’s still hurt over something left unsaid. That bitterness builds invisible walls and his silence in bed might be how he protects himself from feeling vulnerable again.
