Billie Eilish fans make important point about sexuality after facing backlash for kissing actor Nat Wolff

After being spotted kissing Nat Wolff in Italy, Billie Eilish fans have come to her defence surrounding questions about her sexuality.

When it comes to celebrities and their love lives, we do tend to get invested.

And being the icon that she is, Billie Eilish is always going to have all eyes on whoever she might be dating.

Fans went crazy earlier this week, as the singer, 23, and the actor, 30, were spotted kissing and drinking from champagne flutes on a balcony in Venice, Italy.

The pair were first linked as they left the iHeart Music Video Awards together in March, and were also seen spending a night out in New York City together.

Despite formerly claiming that the two are just good friends, it seems a romance is officially on the cards for the two stars.

People have questioned the singer's sexuality (Rich Polk/Variety via Getty Images)

As ever, people online have been quick to judge, questioning the relationship after raising questions about Billie's sexuality.

"Didn’t she say she was lesbian, and doing this during pride month too smh," one said.

"I thought she was lesbian?" another added.

But fans of the star came straight to her defence, noting that while the singer never claimed to be a lesbian, sexuality can be fluid.

"God forbid a bisexual woman is f*cking bisexual???," one noted.

The 30-year-old actor was seen with Billie in Italy (Kevin Winter/WireImage)

They continued: "Y'all are so biphobic it’s f***ing disgusting. Billie dating a man doesn’t get rid of the fact she likes women!!! Use your f***ing brain cells."

Another added: "Now why is the timeline dragging Billie Eilish just because she has a boyfriend? She always said she’s bisexual, not lesbian where’s the problem?"

Billie previously opened up about having details about her love life and sexuality in the public gaze, and how difficult it can become.

The pair have been 'good friends' for a while (Instagram/@natandalex)

Speaking to Vogue last year, the star feared she might have shared too many private details over the years.

She said: "I wish no one knew anything about my sexuality or anything about my dating life. Ever, ever, ever."

The singer added: "And I hope that they never will again. And I’m never talking about my sexuality ever again. And I’m never talking about who I’m dating ever again."