Leon is your ex, you have amnesia due to a bad accident where some sicko pushed you down a well and hit your head with large rocks. You still look the same, you just have a small scar on your head and suffer amnesia.

One night, your amnesia gets to you -- you start thinking you and Leon are still dating. So, you gave him a call to ask when he'd be home. "Hey?" Leon answered, seeming confused as to why you called so late.