The Grand Air Trine involving Jupiter in Gemini, Mars in Aquarius, and Libra on the Ascendant could bode rather well for Gemini lovers. Not only is Jupiter in your sign, but Libra, the sign ruling love relationships and marriage, connects with Jupiter, while Mars in Aquarius connects with both of them. Romantic Neptune will be passing through your Fifth House of love and passion - and all this strongly indicates that romance will blossom like rosebuds.
You might even experience a rebirth of the romance associated with teenagers. Either way, a stronger commitment is apt to burgeon. As to why, this depends on the rest of your chart. For the most part, love will continue and grow, and commitments will have the strength of granite. If small things come up and occasionally erupt into arguments, don't fret; this is part of the growth process and doesn't mean it will shake your love's foundation.