Aishiteru

Aishiteru is the Japanese word for I love you.

The Japanese word aishiteru, means i love you in English.

A Japanese term, meaning "I'm in love with you"

Although "aishiteru" is the Romanised form of the Japanese for "I love you", it's worth noting that the word isn't actually used very often in Japan.

Its most common usage by far is amongst weeaboos (see also wapanese) where you'll almost always see it spelled with the Roman alphabet like it is here.