I've been asked in Tumblr about more Leolina lore (more about it) so I made a bunch of drawings but as I wanna make DeviantArt more trendy for me and the alghorithm (or whatever how is called) I am gonna post it one by one with their respective descriptions.

Their official relationship doesn't start until after "Tales of the Yokai" Episode. Before that, during Season 3, they are totally into each other but they wanna keep it low for now... then, in "Battle for New York" episode, Selina and Leonardo became more obvious about their attraction but again, they weren't sure if it was the time or not (but even Raphael noticed and he was like "Man, you want her or not, stop hiding it."
Season 4 Space Arc, the Fugitoid already knew Selina was special but he thought everyone knew it already so he didn't mention it (idiot). Selina's birthday came in mid of their space adventures and Leonardo was SO READY, he knew EXACTLY what to do so he wanted to surprise her to a trip to the moon! They discovered that Selina's scales and markings (even eyes) started to glow once she stepped on it... which shocked them both but Leonardo was never been more happy. Leonardo was about to propose marriage to her (remember in my AU they're young adults around 20') as a birthday gift, but- Lord Dregg interrupted and kidnapped Selina to use her lunar powers as a battery cell for his own planet. Imagine Leo's fury after that.

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