Two names with the same Nickname

Hello,
I need your help.
I have two main characters and I need eirther a nickname that can fit with 2 different namesor maybe a name and a not very obvious nickname. Cause I don’t want anyone to know I am talking about him. :confused: :rolleyes:

Character 1: He’s 22-25 (not sure yet). He is the manipulative kind of boyfriend.Maybe a little phycho too :smiley: (Kinda like Junior from Under the Dome)
Character 2: He’s 17. He is your ordinary guy. Not too good,not too bad.

[name_m]Benedict[/name_m] and [name_m]Benjamin[/name_m], nn [name_m]Ben[/name_m]
[name_m]Jacob[/name_m] and [name_m]Jason[/name_m], nn J/[name_u]Jay[/name_u]
[name_m]John[/name_m] and [name_m]Jonathan[/name_m] nn [name_m]Jon[/name_m]
[name_m]Albert[/name_m]/[name_m]Alistair[/name_m]/[name_m]Alexander[/name_m]/[name_m]Alfred[/name_m] nn [name_m]Al[/name_m]

[name_m]Alistair[/name_m] and [name_m]Alexander[/name_m] could work, and [name_m]Alistair[/name_m] can be the psycho boyfriend and [name_m]Alexander[/name_m] can be the normal guy.

[name_m]Leo[/name_m] & [name_m]Eli[/name_m] nn [name_u]Lee[/name_u]