YOU SAID:

I’ve been watching Gilmore girls since noon.

INTO JAPANESE

私は正午からギルモアの女の子を見てきました。

BACK INTO ENGLISH

I have been seeing girls in Gilmore since noon.

INTO JAPANESE

私は正午以来、ギルモアで女の子を見てきました。

BACK INTO ENGLISH

I have been seeing girls in Gilmore since noon.