[name_m]Sebastian[/name_m] and [name_m]Theodore[/name_m] are so handsome together 
I’d suggest:
[name_f][/name_f][name_m]Nathaniel[/name_m] (Nate, [name_m]Nathan[/name_m], [name_m]Nat[/name_m], Thaniel)
[name_f][/name_f][name_m]Raphael[/name_m] (Rafa, [name_m]Raffy[/name_m], Raph)
[name_f][/name_f][name_m]Evander[/name_m] (Evan, [name_m]Vander[/name_m], [name_m]Van[/name_m], Anders)
[name_f][/name_f][name_m]Malachi[/name_m] (Mack, [name_m]Lachie[/name_m], Kai)
[name_f][/name_f][name_m]Ozias[/name_m] (Ozzie, [name_m]Zai[/name_m], Oz)
[name_f][/name_f][name_m]Lucian[/name_m] (Luca, [name_m]Luc[/name_m], Lu)
[name_f][/name_f][name_m]Julian[/name_m] or [name_m]Julius[/name_m] (Jules, Jude)
[name_f][/name_f][name_m]Montgomery[/name_m] (Monty)
[name_f][/name_f][name_m]Zachary[/name_m] (Zach, [name_m]Ari[/name_m], Ziggy)
[name_f][/name_f][name_m]Jonathan[/name_m] (Jonny, [name_m]Nathan[/name_m], Jonty)
[name_f][/name_f][name_m]Frederick[/name_m] (Freddy, Rex)
[name_f][/name_f][name_m]Benjamin[/name_m] (Benny, [name_m]Benji[/name_m], [name_m]Jam[/name_m], [name_m]Jem[/name_m], Ben)