There's something about you that draws me in.
AI qual-CO-sa ke mi at-TI-ra — stress on 'co-' and 'ti-'. 'Attira' has three syllables: at-TI-ra.
When you feel drawn to someone but cannot fully explain why — honest and mysterious at the same time. Very effective.
'Hai qualcosa' = you have something. 'Che mi attira' = that draws me in (relative clause with 'attrarre', to attract). 'Qualcosa' is indefinite — the vagueness is the point, suggesting an ineffable quality.
C'è qualcosa in te che non riesco a spiegare.
There's something about you I can't explain.
More mysterious — the inability to explain adds intrigue
Mi hai incuriosito/a fin dal primo momento.
You've intrigued me from the very first moment.
'Incuriosire' = to intrigue, to pique curiosity — a lovely verb
Hai un fascino particolare.
You have a particular charm.
'Fascino particolare' — undefined but specifically yours — is a subtle and beautiful compliment
Italian romantic culture prizes the ineffable — that which cannot be named or explained. The concept of 'fascino' (charm) is deeply embedded in Italian ideas of attraction. Something that defies analysis is considered more romantic than something that can be itemised.