I headcanon that Rarity has no experience dating mares, only having gone out with stallions before. She has always been someone to take the initiative in her m/f relationships but since her newfound feelings for Applejack she would overthink everything because it’s so unfamiliar to her. Luckily Applejack is there to guide her through it and soon realize it’s the most natural thing in the world.
Rarity actually has a decent friendly relationship with Ditzy due to frequent deliveries to her shop and helped her with giving her hoof-me-downs of baby Sweetie Belle for baby Dinky - so the two are quite friendly and I could have drawn that…
… She also is down bad for Sea Swirl and I chose to draw that instead!
Sea Swirl is studying to be a doctor, she is close to having a whole doctorate in marine biology and yet she has line cook rizz. So she will flirt with Rarity when passing through Ponyville and Rarity melts like a marshmallow.