The 25-year-old from San Francisco became engaged to Martinez in Tahiti during the season finale of the ABC romance reality show, which aired last night.
When asked during a joint appearance on Jimmy Kimmel Live if they had any wedding plans, she replied: "Maybe in the spring, we're thinking."
She added: "We have so much faith in our relationship and every day we tell each other, 'You are my priority, we're going to put each other first no matter what every single day'."
The couple also revealed that they have been in seclusion for around three months and joked that they have watched the show together about ten times.
Kimmel then asked Martinez how it felt to watch Fedotowsky dating other men, to which he laughed: "You had to go there! You kind of prepare for that stuff. You know what you're getting into. It was hard to watch but she is the best. She kind of walked me through it and in the end I'm here and we're good. This is what matters!"
Fedotowsky recently described Martinez as an "incredible man", while the pair have said that they are planning to move into an apartment together in San Diego.
The Bachelorette airs on ABC.
> Click here to read our full recap of the proposal and season finale