You and Rarity decide to take it slow after breaking it to her parents, and you make sure to take the time to get to know one another's quirks. Rarity even teaches you how to sew, allowing you to help her make her designs at an increased pace, earning her more business.
There's a point where the two of you realize you spend more time at her boutique than at your own house, which leads to the inevitable moving in with one another. Sweetie couldn't be happier. Every time she visits from school she gets to play with "the mountain", while her older sister always seems so cheerful and full of energy.
Rarity's parents visit every now and then, to see how things are going, always happy to hear things are working out.
And your private life really leaps forward once you share a residence. Sometimes, it's hard to get anything done, so attracted are you to each other. Those days really are the best, though.
Her friends support your relationship and invite the two of you to their parties and get togethers, always happy to have another friend along for the ride.
The future promises to be a kind and loving one, filled with romance and laughter.
And neither you or her could ask for anything more.