Zoe Saldana and her husband Marco Perego-Saldana love to swim naked together.

The actress and the artist, both 45 - who have been married since 2013 - work hard to keep the spark alive in their relationship.

Speaking on 'The Drew Barrymore Show', Zoe said: "When we're in Europe and in the Caribbean, sometimes we forget our bathing suits and we just go for like a swim."

She also revealed how they tried to sneak away for some alone time but were caught out by their kids, six-year-old Zen and eight-year-old twins Cy and Bowie.

She said: "Oh God... and he just found a way to, to call sexy time like playing Legos naked.

"So then the boys, at least, you know, our older ones caught on and they were like, 'Are you guys kissing? Are you guys gonna go play naked with your Legos?' And we're like, 'No, we're not going to do that'.

Marco added: "We can try. We play Lego naked now."

Zoe also admitted she strugged at first to accept Marco's overt displays of affection when they first got together as she had been hurt in previous relationships.

She said: "It feels lovely, I have to say there were for many years when we first got married, it was hard for me to accept it.

"There's a part of us and women, you know, if our hearts have been broken before where we self-sabotage a lot and then one day you just wake up and you sort of go oh, maybe this is real.

"'Maybe he really means to ask me if I'm comfortable. So I should just say thank you I am. And, the next step is asking him if he's comfortable."