The auxiliary verb do is used in a lot of ways.

We use do to make questions with ordinary verbs, but not with auxiliary verbs. Compare:
Do you like I Can you /

We use do to make negative sentences with ordinary verbs, but not with auxiliary verbs. Compare:
I don't like football.
I can't play football.

We use do instead of repeating a complete verb or clause.
She doesn't like dancing, but I do (= ... but I like dancing.)
Ann thinks there's something wrong with Bill, and so do I.
You play bridge, don't you?

We use do in an affirmative clause for emphasis.
Do sit down. She thinks I don't iove her. but I do love her.

We can use the auxiliary verb do together with the ordinary verb do — so that we have do twice in the same verb phrase.
What do you do in the evenings?
'My name is Robinson.' 'How do you do?

Astrology

Love Compatibility between Libra and Scorpio

Libra and Scorpio
- Love Compatibility Profile :

When Libra and Scorpio come together in a love match, they tend to make a very emotionally connected and mutually satisfying union. Though Scorpio is a brooder who can get lost in the confusing welter of their own emotions, Libra's proclivity for balance and harmony helps keep Scorpio even. Scorpio can return the favor to Libra with their characteristic powers of focus, a trait that Libra usually lacks. These two are very compatible due to their similar needs in a love relationship: Libra is the Sign of Partnership, and Libra is happiest when in a well-balanced and intimate relationship, while Scorpio thrives on emotional and sexual intimacy with their mate. These two Signs can make a very loyal, close and satisfying partnership.
These two would do well to undertake some sort of project together aside from their love relationship, as they have great potential to get great things done. They combine the power of emotion with the power of intellect, an extremely formidable duo. Scorpio tends to be more patient, but is also more controlling than Libra. Despite any differences, both partners love risk and taking chances; this is not a boring relationship! These two are real charmers; they know how to woo and seduce one another and take great pleasure in doing so. Their different styles -- Scorpio is intense and secretive while Libra is upfront and open -- sometimes make them have trouble understanding one another, so they may need to pay close attention to their communication at times.
Libra is ruled by the Planet Venus (Love) and Scorpio is dually ruled by the Planets Mars (Passion) and Pluto (Power). Libra's love of beauty and romance balances the strife that can arise in Scorpio's life due to their deep, often tangled emotions. Scorpio's Mars influence at least promises an active, exciting relationship. Also, neither Sign wants to argue. Scorpio avoids arguments in favor of secret revenge; Libra abhors conflict and will do anything possible to avoid it, including backing down and seeking a truce.
Libra is an Air Sign and Scorpio is a Water Sign. The best decisions are made combining the intellect and the emotions -- using both the head and the heart, this couple can meet almost any challenge, understand almost any puzzle. This is all contingent, of course, on the two Signs working together, not against one another. Scorpio is a master strategist and can help Libra focus their occasionally scattered or indecisive minds. At times, however, Scorpio's over-emotionalism can drag down and dishearten Libra, and Libra can occasionally make Scorpio feel flustered and uncomfortably stirred up. It is at these times when Libra's natural diplomacy comes in most handy.
Libra is a Cardinal Sign and Scorpio is a Fixed Sign. Libra is always thinking of something new to try: a new restaurant or art gallery to visit on a date or a new place to travel to -- but it's Scorpio who has the determination to follow through on these ideas. These two have the capability to be the most loyal and devoted of partners, as these are qualities that are quite important to each of them.
What's the best aspect of the Libra-Scorpio relationship? The power they find in unity. They can accomplish a lot, whether they come together for a cause in the business or romantic sphere. They are both winners and they won't give up, making theirs a relationship that takes care of business.