Sometimes these pieces take a while to get set into your brain. I had that experience with Love Is For Children with the characters' sexualities. Not because I thought they were wrong but this was the first time I heard the terms asexual, aromantic, and demi-sexual so my brain had to process, catalog, and log that new section of information before anything else. Not least of which because it made my own sexuality suddenly make more sense to me. I knew I didn't quite fit into the labels I already knew - heterosexual and homosexual - but until then, I didn't know there were words to describe someone like me.
Maybe it was because of the personal revaltion tied into but now I find it weird every time I read a story or something where Clint isn't asexual. Or when Natasha is romantic toward anyone. Steve is demi-sexual to me.
And just recently, someone made the remark that Anakin Skywalker could be correctly described as demi-sexual. The same person considers Obi-Wan Kenobi to be asexual and aromantic. Which doesn't match what is said in the Expanded Universe but those are only loosely canon regardless of their endorsement. It does fit with everything we see on screen from Obi-Wan. My brain went "Oh that makes sense" and now I think I will be unable to view either character as a different sexuality again.
This isn't the only piece of this person's headcanon that has infected my brain but it is the most recent one.