As a phrase, this means nothing -- it is not a structured in such a way as to form a grammatically meaningful or correct sentence.
Individually, these words mean:
"Watakushi" is a formal way to say "I"
"Ai" has many meanings, but a common one is "love."
"Anata" means "you."
If you wish to say "I love you," you may say "Watashi ha anata wo aishiteiru."
Watakushi is another way of saying I, although watashi is more commonly used.
Watakushi is very formal and polite.
do it for me
The cast of Watakushi-tachi no kekkon - 1961 includes: Isao Kimura Noriko Maki Sadako Sawamura
Shigeru Yonezawa has written: 'Watakushi no rirekisho'
Yoshitaka Kikuta has written: 'Watakushi no Dazai Osamu'
Tetsuko Takemoto has written: 'Genji monogatari to watakushi'
Hideko Mitsunari has written: 'Tosaka Jun to watakushi'
"I love you"
Takeo Koyama has written: 'Watakushi no mita Chugoku tairiku gojunen'
Iwao Mori has written: 'Watakushi no geikai henreki' -- subject(s): Motion pictures
Mitsudada Inoue has written: 'Watakushi no kodai shigaku' -- subject(s): Historiography, History
'watashi wa' means 'I am' and 'ne' is a sentence ender which usually means 'isn't it' or is a softener, kind of like 'yeah'.This is not, however, grammatically correct.
Masao Baba has written: 'Watakushi no suki na rakugokatachi' -- subject(s): Storytellers, Biography, Rakugo