When they get together, they usually get strangely involved in emotions none of them really understands. Their sex life is something to cherish, easy, open and with no pressure at any side. They will both enjoy their sexual relations, followed by laughter, creativity and joy. As two children in bodies of grown-ups, they could go through the feeling of shame together if they don't have much experience.
This can make them both a bit selfish, but if their communication keeps going, there is no reason why this would be a turn off for anyone. It is a strange thing, but sex is really not that important to these partners. They are looking for someone to complete their mental personalities, someone to talk to and give them a sense of purpose.
This is why they could decide to stay friends after a breakup, for their starting premise was in building a strong relationship founded on their personalities, rather than their sexual or emotional natures. Strangely enough, this can lead to ultimate faithfulness, for there will be no more excitement in the secrecy and mystery of parallel relationships. Sagittarius is not someone who can tell a lie and keep a straight face, and they are usually really disturbed by the lies of other people.
When they get together, this all becomes something to have fun with and they could play a game of trust until they build it on strong foundations of mutual respect. This kind of understanding is truly something to cherish. As opposing signs they complement each other in general, but this is strongly sensed in this segment of their relationship. The curiosity goes both ways and they will spend days just learning about each other and absorbing shared experiences.
The only thing that can interfere with the quality of their mental connection is the possible fear of intimacy that builds in the meantime. In general, this is a couple you want to hang out with, every day. They will literally share happiness with one another and with those around them. They can inspire anyone to love and to smile, because when in love, they will laugh so sincerely and have so much fun together. Their optimism and their eloquence will multiply, day after day, until one of them gets scared and decides to take off or death do them part.
Both signs have a non-emotional feel to them, but their contact develops so much emotion that maybe neither one of them will be able to cope with it. As opposing signs it might seem that Gemini is scattered and superficial, while Sagittarius is collected and deep, but in fact they have the same core in the fact that everything needs to make sense.
Usually, we would connect this with the sign of Sagittarius , but Gemini has it in their approach to words and everyday actions. This positive emotion and pure joy they can share, becomes something like a happy drug to both of them and they no longer want to be apart. There is a point when they will get irritating to their surroundings, like two spoiled children without a care in the world, but while they are this happy — why would they care?
Their relationship has a strong intellectual connection, in which they will gradually find deep emotions. There is no real prognosis how this will end though, because the emotions they feel could easily scare them away and their relationship could end only because of fear. Or is it beyond?