How can one deal with a friend whose behavior has changed, who has begun to reflect feelings of loneliness after having been introverted, and who is trying to show that she does not need the questioner?

Loneliness has four forms: painful feeling, isolation, the ability to be alone (seclusion/retreat), and introversion. Each has its causes and psychological effects. To treat the painful feeling of loneliness, one must understand its causes, integrate into society and benefit people, draw closer to God, and consult a psychotherapist if necessary. As for seclusion (i'tikaf), it is a sign of psychological well-being and helps in processing life's complexities, while introversion is an innate disposition and not negative.

In human relationships, if you feel unhappy, the reason may be behavioral mistakes or misinterpretations. Your happiness is your responsibility, and you must fulfill your duties, review your interpretations, and end abusive relationships if that is the correct decision.

You should be completely frank with your friend about everything on your mind to avoid misunderstanding, then observe the situation. If negative behaviors continue, the level of the relationship can be gradually lowered while maintaining psychological health.

Ending relationships requires awareness and forbearance, and does not mean complete severance. Often, reducing the level of communication is sufficient. This should be done with awareness, not with emotional impulsiveness or purely material calculations, while preparing for potential obstacles and not rushing to open up to any relationship; for a beautiful, patient break is better than harmful mingling.