I agree, went through the same with Wyll.
Playing as a female Drow I never ever flirted with him, merely asked him one night if he would dance with me so I could lift his spirits a bit since he was hiding away from the party. Ended up feeling absolutely terrible in ACT 2 when he actually started dancing and then put the most depressingly disappointed face ever in the history of mankind, because apparently asking him to dance is all it takes to trigger the romance fully.
Literally just one line. And since I was romancing both Lae'zel and Karlach, once I broke up with Lae'zel in ACT 2 his love scene triggered the very next night to cockblock me from devoting myself fully to Karlach. Honestly even Witcher 3's prostitutes required more work to get in bed with than Wyll
