A friend in need is a friend indeed!

One of my associate asked ~ How to analyse astrologically about a True Friend? Who is True Friend? Who is True Friend ~ A friend who helps out when we are in trouble is a true friend.
As per Nadi Jyotisha, Mercury is Karka of "Friendship" as well of "Lover (both~ Male & Female)".
Further, Male Nativity is governed by Jupiter & Female Nativity is governed by Venus. So, the following combinations are possible as per Gender:
* Male Native ~ Himself (Jupiter) + Friend (Mercury) i..e Jup + Mer.
* Female Native ~ Herself (Venus) + Friend (Mercury) i.e. Ven + Mer.
Lover is governed by Mercury. So, if Love-Relationship (Mercury) get materialized into Marriage (Venus).... Mercury transforms into Venus!
For Male Native: Jup + Mer + Ven
For Female Native: Ven + Mer + Mars. Here, we know Mars have enmity with Mercury!

How to judge future of Friendship?
First of all, one need to check his/her own condition according to governing Planet i.e. Jupiter or Venus. Check if Jupiter or Venus (according to Nativity Gender) is under affliction of Malefic/s? Further, check for other Nadi Rules i.e.:
1. Sign Exchange
2. Mutual Placement of concerned Planets
3. Progression of Planets etc.
1. Saturn ~ Platonic type attitude as well insecure nature in relationship, introvert nature 
2. Sun ~ Aggressive, much talkative as well Skepticism
3. Moon ~ according to Waxing or Waning and affliction. Further Insecure to Psycho or humorous and jolly nature (विनोदी और हंसमुख प्रकृति).. etc.