YOU SAID:

I'm only coming over for a cup of tea.

INTO JAPANESE

私はお茶を飲みに来るだけです。

BACK INTO ENGLISH

I just come for tea.

INTO JAPANESE

私はお茶を飲みに来ます。

BACK INTO ENGLISH

I come for tea.

INTO JAPANESE

私はお茶を飲みに来ます。

BACK INTO ENGLISH

I come for tea.