Neptune can manifest as an attraction to people who are truly giving or , attracted to those who are truly self-destructive. It is difficult to see the partner clearly and therefore, is important to be able to look at others without a veil of illusion. Relations are usually of a platonic nature and often clouded. If Neptune is afflicted or in fall, the partner is too emotional and easily led. The person is deceitful, untruthful and scandals often result or there is some fatality attached to women. If Jupiter is involved, their can be involvment with the law, court regarding scadals and bigamy.
When Neptune here indicates high ideals involved in relationships. This person is highly compassionate and sensitive to the needs of others. He may unconsciously expect that the partner lives up to something that he cannot express himself. This person is also ready to make sacrifices for a partner, since it may view the partner as a savior of sorts.
With the Neptune in the 7th a pesron may idolize his mate and possibly feel that they met by fate.
Neptune in the 7th means that you will meet Neptune in the arena of relationships with others. In most cases, we are going to project Neptune out (and I do not have your whole chart to look at to determine whether this outer/collective planet is conscious or unconscious in your chart) and attract Neptunian based people towards you. There will be a need to merge with another individual, which can be both very positive and very negative depending upon your entire chart construct.
I am going to suggest reading “The Astrological Neptune,” by Liz Greene, which I find to be the best book on the subject. I honestly believe that with a planet of this magnitude (as with Uranus, Pluto, and Eris) that using amplification by understanding the myths and fairy tales associated with this planet helps to ground it and make it more understandable.
learn all about neptune here
Neptune in 7th House – angular house Often a strong psychic link with marriage partner. You will be easily affected by the moods and feelings of other people. You may be called upon to make sacrifices for business or marital partner. Relationships drawn to. Always looking for the IDEAL partner/mate, could well get what they wish for! Might get a clinging vine, or the opposite a very independent type spouse. Beware of self deception; ie wearing rose tinted glasses.