Eva Mendes, Ryan Gosling Gotham/Getty Images for ABA ; Axelle/Bauer-Griffin/FilmMagic Eva Mendes is a naturally confident person, but that self-assuredness skyrockets with every glance from partner Ryan Gosling. “I feel really f—ing sexy at times,” Mendes, 50, told The Sunday Times in a profile published on Sunday, October 20. “The way my man looks at…