You're exactly my type.
sei e-zat-ta-MEN-te il MIO TI-po — stress on 'men-', 'mio', 'ti-'. 'Esattamente' has five syllables: e-zat-ta-MEN-te.
A direct and flattering admission — telling someone they fit your ideal is a genuine and brave compliment.
'Sei esattamente' = you are exactly. 'Il mio tipo' = my type. 'Tipo' in this context means type/sort of person — the ideal you had in mind. 'Esattamente' adds precision and emphasis.
Sei proprio quello/a che cercavo.
You're exactly what I was looking for.
Even stronger — implies you were searching and have now found
Se potessi descrivere la persona ideale, ti descriverei.
If I could describe my ideal person, I'd describe you.
Poetic hypothetical — the most direct form of 'you're my ideal'
Non avrei potuto immaginare meglio.
I couldn't have imagined better.
Conditional — implies you tried to imagine someone perfect and this person exceeds it
Italians are generally specific and personal in their flirting — naming what attracts them ('intelligente, occhi vivaci') rather than giving generic praise. This specificity signals genuine attention and observation, which is far more appealing than vague compliments.