"Ay Gina! I Love you.." is quoted from Al Pachinos role as Tony Montana in the classic movie Scarface. Gina is referring to Tonys wife, who he loves.
Theres a hot girl walking down the hallway in school, so you yell "Ay Gina" and she looks then you say "I love you.." in your bet Tony Montana impression.
Girls hop on your dick when they hear that five worded phrase, "Ay Gina! I Love you.."