Irish Citizen moving to Uk, will gf get a visa?

[SR5432]

Hi everyone,

I have recently been offered a job in London and looking to move to UK, as an Irish citizen my understanding is I can move and live freely in Uk.
My girlfriend is from Brazil, but has Italian citizenship so would be applying as a EU citizen.
My girlfriend, and I (Together 2 years, living together 1 year) are looking to move together.
Can she apply for family visa as a partner and do I only need to prove the relationship?

Any and all information/ advice is welcomed!

Does being married make a difference in our case? That process takes minimum 3 months in Ireland I think but I wouldn’t rule that out either as an option if necessary.

Thanks so much.

S