How do I make friends with this girl at work?

I've known this girl at work for years. She's very quiet, funny and sweet but kept to herself.

She's a rich girl but extremely hard working. She loves horses and rides them a lot. she always had her hair, nails, lashes done etc.

She's always been friendly with me but she's very kept to herself and I respect that I wish I was like that now looking back at my work friend history.

We've been working together in s group on a first aid course today and we get on like a house on fire. We laughed so much and she's just as much as a girls girl as me.

I've had a some really toxic female friends at work especially one who I really trusted and she's stabbed me in the back and ditched me for a boy who doesn't even want her I'm staying friends with her because she's coming to my wedding now and she gives me lifts to work.

I could see how jealous this friend was getting that I was getting on really well with this girl whilst she was sat with that boring f boy she ditched me for.

I know this friend is already incredibly jealous of me because I have the life she desperately wants and I do genuinely want to be this other girls friend she's none toxic and has no red flags unlike my past female friends I've just thought she wouldn't like me because she's a rich girl and everything.

My partner even wants me to become friends with her because she sounds a lot nicer

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I just want a nice girl who likes the same stuff as me who doesn't treat me like shit 😭
How do I make friends with this girl at work?
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