The former reality TV star took to Instagram to share the happy news with her followers.
Uploading a video of the momentous occasion, the 26-year-old declared: 'I said yes!'
The couple began dating in 2016, with the relationship getting serious a year later during a vacation to Greece.
Olena admitted to Daily Mail that she had found the one.
'I'm really happy I've found the one for me.'
'It's going well, everything's been going great and we have a very good connection,' she added.
She had previously admitted she was worried she might not find someone due to her father who is a boxer.
'I am going to be single for the rest of my life with my dad in the picture. [Guys] are so scared of him' she told Fairfax.