What was supposed to be a one-night-stand with Tony Stark turns into something more. Tony Stark x Female Reader

"𝐇𝐚𝐬 𝐭𝐡𝐞 𝐩𝐫𝐞𝐭𝐭𝐲 𝐠𝐢𝐫𝐥 𝐰𝐢𝐭𝐡 𝐚 𝐟𝐚𝐬𝐭 𝐜𝐚𝐫 𝐫𝐚𝐭𝐭𝐥𝐞𝐝 𝒕𝒉𝒆 𝐓𝐨𝐧𝐲 𝐒𝐭𝐚𝐫𝐤?" [mature themes throughout] DISCLAIMER!! This story does not follow any specific timeline in the MCU - everyone is alive unless stated.

After a heartbreak, you spent a crazy night in Vegas. When you wake up in the morning, you don't remember anything from the past night. What shocks you even more is a ring on your finger and a hot, rich billionaire in your bed.