YOU SAID:

Leo is my son, and I'm paying for half of that party.

INTO JAPANESE

レオは私の息子で、そのパーティーの半分は私が払っています。

BACK INTO ENGLISH

Leo is my son and I'm paying for half of the party.

INTO JAPANESE

レオは私の息子で、パーティーの半分は私が支払います。

BACK INTO ENGLISH

Leo is my son and I pay for half of the party.

INTO JAPANESE

レオは私の息子で、パーティーの半分は私が支払います。

BACK INTO ENGLISH

Leo is my son and I pay for half of the party.