Jennifer Lopez says her son Max is the ''love of her life''.

The 44-year-old star was given handwritten love note from the five-year-old tot - who has a twin sister, Emme - shared a picture of the message with her fans on her Instagram last week, which read: ''I'll luv you beyond forever mom (sic)''.

J-Lo spoke of her surprise when she opened the letter which the little man had left her on her bed.

Speaking on 'The Ellen DeGeneres Show' yesterday (15.01.14), she said: ''It just made my whole life. I'll cry right now. Stop it! Oh my God.

'''Beyond forever' ... that's the line, that's it. You know, I came home, and it was on my bed and then I opened it and just left it there. It was in a big manila envelope, a yellow envelope, and it said, 'To mom, from Max.' And I opened it, and I was like, 'Oh my God.' ''

The 'American Idol' judge - who is currently dating dancer Casper Smart and has previously been married to Ojani Noa, Criss Judd and Max and Emme's father Marc Anthony - insists her little boy is her true love.

She added: ''My son, that's the love of my life right there!''

The brunette beauty's fellow 'Idol' judges Harry Connick Jr. and Keith Urban joined her on 'Ellen'.

Harry - who has three daughters, 17-year-old Georgia, 16-year-old Sarah and 11-year-old Charlotte with wife Jill Goodacre - admitted he doesn't receive the same kind of sentiment from his children.

He said: ''That's amazing. I get notes from my kids but it's like, 'I'll love you as long as you want if you give me a hundred dollars.' All this 'beyond forever' stuff - you live in some kind of fantasy world, Jennifer Lopez!''