This is a couples reading from me and my first love. I never really thought of us quite this way, but we really were like this. And we are still friends.
Part 1: Planets and Aspects

Sun Conjunct Mercury

Your relationship may not be so much an emotional relationship as it is an intellectual one. Yours is perhaps a relationship where you can exchange thoughts and ideas, study, research, spend hours in conversation and enjoy mental stimulation rather than physical. For you, sex takes place mentally rather than physically. Rather than having an emotional rapport, you may be more detached and logical in your relationship.

Your conversations will be excellent and since you have so much in common, you probably think the same ways about life in general. You will have no trouble understanding what the other person is talking about. There are very meaningful discussions indicated here and should you be involved in creative or business ventures together, then this aspect is an added boost for the conception of new ideas.

You can feel very close to each other with this aspect, without feeling vulnerable, and doing your "own thing" will be a prerequisite for the two of you. Trips and travel, whether local or long distance, are also part of this aspect. Sitting still may be difficult for you both.

Sun Trine Neptune

This aspect suggests that this will probably be a very strong platonic relationship. It will be filled with spiritual, metaphysical, intuitive and psychic energy that only the two of you understand. You will be able to very strongly sense each other's presence and you are able to tune into what the other person is thinking, even if you are not together. If either of you haven't considered the spiritual or psychic realms before, then you will with this aspect. People will view you as having your heads in the clouds, impervious to what is going on around you. This is the only danger because eventually you are going to have to come back down to earth and deal with reality.

People around you will not see yours as a realistic relationship. They will view it as very impractical. Humanitarian and charitable acts as well as generosity for people less fortunate will serve to rebuild your lives in very special ways. You will do things you have never dreamed about before. Long distance travel together for pleasure, meditation, spiritual quests or for just being plain lazy are all effects of this aspect.

Don't let a lack of concern for material affairs keep you from doing your worldly duties. As long as we are on this planet, we do have earthly responsibilities that we must address. Avoiding these responsibilities will only bring trouble in the long run. Don't go looking for trouble - it will find you quick enough by itself.