Answer

Yes, from a Jain Dharma perspective, this is spiritually harmful because it involves sexual imagination, attachment, and passion.

Even if your intention is to avoid desire toward other women, imagining sexual activity with a specific girl still strengthens rāga — attachment — and kāma-vāsanā — sexual craving.

In Jain ethics, control of desire is not achieved by feeding desireire in imagination, but by slowly reducing it through awareness, discipline, awarenessવજાગૃતિ, and right understanding.

Explanation

In Jain Dharma, brahmacharya does not only mean avoidingiding physical sexual activity. It also includes purity in:

• thoughts
• speech
• vision
• imagination
• conduct

For an unmarried person, sexual imagination and masturbation increase inner attachment and restlessness. It may feel like temporary control, but spiritually it keeps the mind tied to sensual pleasure.

Also, imagining a real girl in this way can create stronger emotional and mental bondage toward her, even if she is not physically present.

What should you do instead?

Try to reduce desire gradually, not with guilt, but with awareness:

• Avoid sexual images, videos, stories, and social media triggers.
• Do not sit alone for long periods when the mind is disturbed.
• Keep the body active with study, work, exercise, seva, or good company.
• Practice Navkar Mantra with a calm mind when urges arise.
• Reflect that the body is temporary and sensual pleasure increases bondage.
• If a thought comes, do not fight it harshly; simply redirect the mind.

Spiritual Understanding

Jain Dharma teaches that passions like lust, attachment, anger, pride, deceit, and greed bind karma to the soul. Sexual fantasy may be private, but it still affects the inner state of the soul.

The goal is not self-hatred. The goal is self-mastery.

If you fall sometimes, do not become depressed. Accept it, do pratikraman sincerely, and start again with better awareness.

Takeaway

Your intention to control desire is good, but the method is not spiritually healthy. In Jain Dharma, true control comes by reducing attachment, not by satisfying it mentally.

Move slowly toward purity with patience, awareness, and devotion.