Amanda Bynes 'never dated' fiance

Troubled actress Amanda Bynes has reportedly "never dated" the guy she claimed proposed to her earlier this week.

Bynes admitted Wednesday that she's planning to marry Caleb Pusey, who she met in rehab last year, but he has since told friends he hasn't even romanced the star before.

"Caleb and Amanda did befriend each other (in rehab) ... but he says they never dated much less set a date. In fact, he says he hasn't spoken with Amanda in months," tmz.com quoted a source as saying.

The 28-year-old has sparked concern for her welfare in recent days and was placed under an involuntary psychiatric hold in Los Angeles Friday after she publicly accused her father Rick of sexually abusing her as a child, reports femalefirst.co.uk.

However, she has since retracted the claims.

Amanda, who was recently arrested for driving under the influence (DUI) and accused of shoplifting, spent five months in a treatment facility in July 2013 when she was placed under a 5150 hold after being arrested for starting a small fire in a stranger's driveway.

She was released in December and appeared to be getting her life back on track until her conservatorship, which legally enabled her mother Lynn to take care of her and her assets, came to an end last month.

Meanwhile, the budding fashion designer will be held for 72 hours and her parents reportedly hope to secure another conservatorship during that time.

Lynn previously denied reports her daughter had been diagnosed with Bipolar disorder and Schizophrenia.