The 32-year-old heiress has been dating the 21-year-old model for just eight months, but the pair are smitten with one another and Hilton thinks they will definitely tie the knot in the near future, reported Daily Mirror.
"Marriage could happen soon... I trust him with my life and that means the world to me more than anything," she said.
Hilton, who was previously engaged to model Jason Shaw and shipping heir Paris Latsis, said she is keen to start a family with Viiperi.
The former reality TV star has previously said that she has curbed her partying ways and 'grown up'.
"I'm staying out of trouble. I've grown up," she had said.