They're meant to symbolise the everlasting bond between two people.
But instead of spreading the love, these padlocks, attached to bridges all over the world, are causing big headaches.
The romantic gesture is popular in countries like Paris, New York and even in Chester in the UK.
But the weight of all the locks is causing bridges to sway, making them unsafe.
At Chester bridge all the 'lovelocks' are removed, Ricky's has this report.