The term "Gypsy" is considered outdated and often offensive. It's important to use the preferred self-identification, which for the Roma/Romany people is "Roma."
There is no single "Gypsy English" language. Roma communities have diverse languages and dialects. To express "I love you" in Romani, you'd say:
"Te avel te kerav" (pronounced "tay av-el tay ker-av")
This is the most common phrase used across many Romani dialects.
Remember, language is a powerful tool, and using respectful and accurate terminology is essential for fostering understanding and inclusivity.