Depends really. If he keeps coming on too strong like he does with Joy and Junsa-san and also with almost everyone of the girls he met during his journeys (with Saotshi/Ash,Kasumi-chan/Misty,Haruka,Masat­o/M­ax and Hikari-chan/Dawn)..I'm not sure if it would be too long if he sees another girl he finds pretty and he already had one..so it depends but I can't really see it for Takeshi-kun..Note that Takeshi is "Brock's" Japanese name.