Jennifer Lopez wants to marry her boyfriend Casper Smart.

The 42-year-old singer is thought to be ready for a fourth trip down the aisle after announcing she was parting ways with Marc Anthony last July.

A source told Us Weekly: ''She's telling friends she wants to marry Casper. She's certain she wants to be with Casper forever.''

At a press conference on Monday (30.05.12) to announce her upcoming world tour with Enrique Iglesias and Wisin Y Yandel, Jennifer announced her partner of six months will play a vital part in putting the show together.

''I'm working with [choreographer] Jamie King, and also Casper Smart. It's going to be an amazing, amazing show.''

She added that the event will be ''one of the most historic tours ever.''

She continued: ''There's never been something like this, where Latinos come together like this. It's international - English and Spanish. I just think it's very groundbreaking. I was honoured to be asked to be a part of it.''

Jennifer has previously been married to restaurant waiter Ojani Noa and former backing dancer Chris Judd.