if you interpret ‘her sweet kiss’ as jaskier’s breakup song about him and geralt (which it is) then his reaction to geralt rejecting him was basically just
god the way geralt brutally rejects jaskier as even a friend in episode 6 and jaskier’s decision to keep singing the tales of geralt’s heroic exploits regardless because he’s too devoted to him to just give up on him even after all the harsh things geralt said to him is utterly heartbreaking but it’s also kinda hilarious. like jaskier really was just like
i mean im no expert on tudor fashion and the witcher just loves to blend time periods for inspiration but jaskier’s costumes are clearly extremely tudor influenced and given that on like, a formal occasion Jaskier does seem to wear his doublet laced closed like doublets are supposed to be (tho it looks like it’s maybe fastened rather than laced? idk man im not a costumer i just love historical fashion)
the fact that most of the rest of the time he’s going around with his doublet unlaced to show his cute embroidered undershirt (i looked up if it had a specific name in tudor fashion and like it does it’s called a chemise which im used to meaning ‘women’s underwear’ for most of modern fashion history, and chemises don’t often have embroidery and embellishments because like, they’re not meant to be seen, altho it’s not uncommon for wealthier people)
he’s essentially wearing the equivalent of the unbottoned shirt to show a cute lacy bralette underneath