So you didn't realize that Skye was going to be bangable... In a game where everyone except blood/adopted relations are bangable... Bruh.
I laugh at the notion that it's "bad writing" to have a character who at the time wasn't interested in sex to discover the enjoyment of it and be more curious about it. That's called character growth. Now, if it was Skye after taking the Holy Hammer and then the next day going cock crazy and wanting it, then I would agree that would be bad writing. It's not the case here though. They want to try things out a bit more, now that desire is there. Also, there was not sudden 'Bang Me'. There was interest there established while playing, and slow growth. It wasn't instant.
Might wanna play again and re-evaluate your statement a tad.