Both romantically and platonically :)

Romantically:

1. Crimson Coral Cookie
2. Kazuha
3. Xiao
4. Stardust Cookie
5. Mystic Flour Cookie
6. Beidou
7. Arlecchino
8. Zhongli

Platonically:

1. Muichiro
2. Yuichiro
3. Obanai
4. Venti
5. Black Pearl Cookie