The 29 year old is currently dating .fun guitarist Jack Antonoff, who she's been with since 2012, but things could have been very different for the couple if Lena wasn't such a strong believer in clairvoyants.

"I believe in horoscopes (so much), I believe in psychics, mercury's been in retrograde - if any of your technology's been failing, that's what's been going on," she told U.S. talk show host Jimmy Kimmel. "I've felt its effects myself. A psychic told me when I was going to meet my boyfriend (and) I met him. She said I was going to meet him in April and I met him in April. I was like, 'Should I keep going out with this guy, it's kind of messy, I don't know.' And she was like, 'No. End it. Somebody's coming in April and he plays music.' And she said, 'I can see him in the corner and he's laughing and laughing and laughing.' He does laugh a lot."

Far from taking the woman's words seriously at the time, Lena actually completely forgot about them. She likes to record any readings she has and it was when she decided to play one back that everything fell into place.

"The craziest thing was you would think I would be obsessively looking around for men with guitar cases but no, I forgot about it," she explained, "(and then) I heard it and cold chills went down my body because of the truth of it all."

The actress' views on mediums came to light while she was discussing her email newsletter, which features horoscopes. The release is aimed at women and touches on many different topics, such as health and female rights. It's something Lena is fiercely proud of, which is why she wishes her technophobic family was able to see it.

"First of all, the email thing - my family literally can't figure out how to sign up for it, no-one's ever been more confused," she explained. "They were like, 'It didn't come.' I said, 'Yeah you had to sign up. It wasn't just like you thought about it and then it was going to appear to you.' And then I tried to sign them up but they had to click a verification link in their inboxes, which none of them seemed to be able to do, and I have a tool that lets me see if you're signed up or not - you get it when you become an internet entrepreneur."