Here's a breakdown:
* Itoshii: Means "dear", "beloved", or "precious".
* -ku: This is a grammatical particle that turns a verb into a te-form, which is often used to express a reason or cause.
* -te: This is another grammatical particle that connects clauses.
Therefore, "itoshikute" essentially means "because of being dear/beloved/precious", or simply "because I love you/it".
It's important to note that "itoshikute" is often used in a more emotional and romantic context, but it can also be used to express love for anything precious, like a pet or a hobby.