The actor is currently single and has spoken about the kind of qualities he looks for in women nowadays.
Farrell, who has two sons from previous relationships, told Hello! magazine: "I have no specific wants, desires or needs - or none that I'm willing to speak about anyway.
"I will say that as I get older and calmer and quieter in my own self, the one quality in a woman that I find more and more attractive is kindness.
"A sense of adventure and humour is important too, but I truly find kindness and consideration for others to be the most attractive thing in anyone.
"That's probably the most boring answer to a question that has ever been given but it's what I really feel."
Farrell said he is happy being single for now, but admitted that he would like to find love again.
"I've experienced quite a bit of romantic love and I hope I will again. If someone came along tomorrow I'd be so up for it. I'd be writing bad poems, the works.
"But until that happens, I'm cool with the way things are. I've got plenty of love in my life already in the form of my sons and a few good friends who I value dearly, so I'm not looking for more."