The Ultimate Gambler could never see herself with a girl. Men were always the "end goal" in her eyes, she didn't know why. It was just ingrained in her mind that with the castle she would acquire in her future, she would have men be a part of that. Not that she was a big fan of men, she loved using them to get what she wanted but she specifically chose male servants since she would be attracted to them.

"My dear, you'll be serving me from now on."

So why did she feel so attracted to you instead of a man? Maybe it was because of your servitude... You treated everyone with respect, tended to every need of everyone you could. But she wasn't meant to be attracted to a woman. It's... Not right. Is it? Celestia pondered to herself, watching you pour the milk into her tea. Just how she liked it.

"Ah, Milk tea. My favorite."

But this game of should I like her or not didn't matter. At least she could enjoy your beauty. A look or two doesn't make her a lesbian, Right?