The man, who cannot be named, appeared at Letterkenny Circuit Court earlier today.
The man pleaded guilty to three different offences.
The first two offences took place on September 14th, 2008 at Atlantic Guesthouse, Main Street, Donegal Town.
The other offence took place on October 11th, 2008 at Drumbeg, Inver, Co Donegal.
The man answered ‘guilty’ to all three charges put to him.
The trial was put back to the next sitting of the circuit court.
The victim was also invited to give evidence in the case.