Why won’t my best friend admit that she likes out guy friend?

Okay so we’ve known him (let’s call him Jay) since grade school right? Like back in 3rd grade (2007). He had guy friends too but we’re pretty good friends. I don’t know when exactly he start liking her (let’s call her Kyla but around six grade (2010), I can tell that he started looking at her a different way and I can tell he really like her. What would I know? I was only 11. Lol. Anyways every dance or Valentine’s Day, Jay always thought about Kyla.
He asked her to EVERY DANCE. I mean everyone one. Even the Valentine’s Day dance, winter formal, you know it, it’s ALWAYS Kyla. Never any other girl. I told at my best friend that he really likes her if he keeps asking her to the dance every year but she denies it because they’re a good friends. She’s in denial. Come on! She went to the dance with him twice but she claims “as friends” but Jay thinks otherwise but I’m surprised he never asked her tone his girlfriend. Kyla told him she doesn’t feel the same way. Jay was hurt, but he thinks she’s blind and will realize her heart will be after him.
Jay never liked the guys she likes. Kyla had a boyfriend in a year and he was happy for her back and tell he was very jealous.
Kyla was with her now ex for four years but he cheated on her so bad during the pandemics. Kyla was absolutely devastated. She took herself out of dating for four years. I’ve seen guys come in and out of her life. Jay has always comforted her when guys broke her heart.
So fast forward to present day. We reunited with Jay yesterday after two years because he was going through something but we were there for him. so my boyfriend asked him if he had a girlfriend and he said no still single and then he asked why not. Jay got nervous and said Kyla is his girlfriend. Kyla blushes bright read and quickly said they aren’t and glared at him. She likes him but she won't admit it! So Stubborn. We’re 25 now.

Sorry for the long rant.

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Kyla is intelligent, smart, beautiful, stunning, caring, funny, sassy and honest. She’s mean she going for her doctorates degree I mean come on! Who wouldn’t want a woman like that? Plus Jay is a kind, sweet, funny, her nervous man with a heart of gold, and works with kids. Come on
Why won’t my best friend admit that she likes out guy friend?
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