Irish hottie Colin Farrell and his girlfriend Alicja Bachleda made a rare public appearance together last night in New York for the premiere of their new film Ondine which co-stars Nikki Reed and Harvey Keitel.

The movie tells the story of an Irish fisherman (Farrell) who discovers what he believes to be a mermaid (Bechleda) in his fishing net.

Off camera, the actor reeled in his real-life love during takes. Result? The couple's six-month-old son Henry Tadeusz Farrell.

The Mexican-born, Polish actress Bachleda, 26, and Farrell, 33, have said they have no immediate plans to marry, but X17 did capture exclusive shots of the pair baptizing their son in Poland late last year. [Click here to see those pix.]

We'd love to see this beautiful couple walk down the aisle!