Formal:
* Jako te volim. (Yako te volim.) - This is the most common and straightforward way to express strong love.
* Veoma te volim. (Veoma te volim.) - Similar to "Jako te volim," but slightly more emphatic.
Informal:
* Mnogo te volim. (Mnogo te volim.) - This is a more familiar and affectionate way to say "I love you very much."
* Volim te mnogo. (Volim te mnogo.) - This is another informal option, emphasizing the depth of your love.
* Beskrajno te volim. (Beskrajno te volim.) - This translates to "I love you infinitely" and is a very strong expression of love.
Other Options:
* Volim te iznad svega. (Volim te iznad svega.) - This means "I love you above all else" and is a very romantic expression.
* Volim te svim srcem. (Volim te svim srcem.) - This means "I love you with all my heart."
The best way to say "I love you very much" in Serbian depends on your relationship with the person you are speaking to and the specific context of the situation.