So Dani is kinda the only one left as who else is there that could work/is attractive enouph.?
Who says all of his relationships have to be with ghosts? Danny Phantom had a lot of very attractive characters sitting right in the background - its one of the reasons I wish Amity Park was more populated - as well as some one-episode characters that could be fleshed out into something more. Here's two examples.
From the epsiode "One of a Kind" which was Skulker's first appearance, the character was called Connie and was there to interview Maddie for Genius Magazine but ends up showing an interest in Danny due to his odd behaviour possibly suggesting he could be a genius. With a few tweaks, the episode storyline can be adjusted to introduce Skulker whilst having someone Danny can get with through the damsel in distress dynamic, with her learning whether or not Danny's half-ghost being a possibility.
From the episode "Bitter Reunions" which was where Vlad made his first appearance was Harriet Chin. She can be introduced as a reporter doing a story on Inviso-Bill - courtesy of some prodding from Vlad - so that he can figure out how Maddie and Danny managed to beat the bear. She could pop up now and then, maybe alongside a timed ectopus attack or give some of the other ghost animals a debut, with her figuring out who and what Danny is but keeping it to herself out of gratitude as well as attraction.
