Linday Lohan's new boyfriend has a criminal conviction. Riley Giles, who met Lindsay when they were both at Utah's Cirque Lodge rehabilitation center, was charged with forging drugs prescriptions last year.

The professional snowboarder was charged with possession of a controlled substance by misrepresentation, fraud, forgery or subterfuge by Utah's Summit County Sheriff, after faking prescriptions for anti-depressant drug Xanax.

Riley also spent 10 days in prison after being arrested twice for DUI according to gossip website TMZ.com. Lindsay must also serve time behind bars for a DUI charge.

The 'Mean Girls' actress has until January 18 next year to complete her 24-hour jail sentence, community service and residential rehabilitation program following her arrest on May 26 for DUI and possession of cocaine.

Meanwhile, Riley's ex-fiance Bree Tierney has accused him of "forgetting" to tell her he had met somebody else.

Bree said: "We lived together for three years and planned on being together forever. But when he finally confessed to me that he had sex with Lindsay in one of the stairwells at Cirque - that was it, we were done."

Riley denies the pair had made plans to tie the knot, saying: "I broke up with Bree a week before I started dating Lindsay. We had dated for almost two years, but it's not like we were engaged or anything."

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