Lindsay Lohan�s latest boyfriend will be her bad books after he has been seen hanging off a mystery blonde.

Jared Leto was recently seen at the Hard Rock Hotel in Las Vegas (scene of Kelly Osbourne�s recent birthday bash) getting very intimate with the girl after watching a performance of �Madhouse�.

According to the New York Post Leto was seen flirting with the girl all evening.

The revelation will come as a shock to Lohan who has been heard describing as �the one� and who the US tabloid thought she may even marry soon.

At least she has all that money to keep her warm at night�