London: Ashton Kutcher admitted he never takes his marriage with actress Demi Moore for granted and is always working to keep the relationship going.
The `What Happens in Vegas` star wed Moore in 2005 and while the pair are still blissfully happy, the 32-year-old hunk says it`s important to try and make things better, reported E! Online.
"I`m constantly reminding myself, like, no matter how amazing my relationship is, keep working on it. Keep working on it and keep finding another level. Things can always get better, even when it`s going great," said Kutcher.
The actor recently revealed he prefers to declare love for his 48-year-old spouse online. Kutcher thinks using social networking websites to send affectionate messages to Moore is no different to sending flowers to the workplace.
"Sending sweet nothings on twitter or Facebook is fun. In some ways, it`s no different than sending flowers to the office: You are declaring your love for everyone to see. Who doesn`t like to be publicly adored?"
But he admitted a computer is no substitute for human contact.
"When someone needs us, he or she needs all of us. There`s no text that can replace a loving touch when someone we love is hurting."