Hey there [Name]!
I hope this message finds you well. I wanted to reach out to you because I'm currently in a bit of a financial bind. I was wondering if you could lend me some cash? I promise I'll pay you back as soon as possible.
I know I can always count on you for help and support. You're such a great friend and I'm so grateful to have you in my life.
Thank you so much for considering my request.
Sincerely,
[Your Name]