It's pronounced like "eye" in English, but with a slightly higher tone.
Here are some examples of how to use it:
* 我爱你 (wǒ ài nǐ) - I love you
* 我喜欢你 (wǒ xǐhuan nǐ) - I like you (this is a more casual way to say "I love you")
* 爱是永恒的 (ài shì yǒnghéng de) - Love is eternal
* 爱情 (àiqíng) - Love (as a concept)
Remember, the pronunciation and tone are important for understanding the meaning in Chinese.