But Singaporean cadet Yong Chuean Benedict Ang, 22, has been cleared of a second charge that he undid the woman's bra and touched her breast while she slept.

Ang faced a five-day trial in the ACT Supreme Court, charged with committing two acts of indecency on the ADFA campus last year.

He was accused of going into the room of a friend and fellow cadet he called ''sis'' in the early hours of Sunday, May 6.

Ang lay down in the bed next to the 18-year-old, who had 18 drinks during a night out in Civic.

The young male cadet had also been out in Civic that night, had about five drinks and texted the complainant several times asking where she was.

The Crown said he started rubbing her back, before grabbing her by the jaw and repeatedly trying to kiss her, despite her protests.

It said Ang blocked her nose, and forced his tongue inside her mouth.

The woman said she used her teeth to force him to stop, then fell back asleep.

She said she then woke up to find Ang had undone her bra and was fondling her breast.

But the cadet, who maintained his innocence throughout, was cleared of touching her breast by the jury on Friday night.

Ang sat still and upright as the jury delivered its verdict, showing little reaction.

He said the kiss was consensual, and that he had gone into the room to check on the woman.

Ang claimed he offered her a back rub because she complained she was sore.

He said he was on her bed and went in to kiss her, but stopped after she said: ''I can't do this, you're like my bro.''

Crown prosecutor Shane Drumgold said Ang's version of events was ''ridiculous'', ''bizarre'', and ''full of Freudian slips''.

The prosecution said Ang made admissions to fellow cadets, in which he told them he ''f---ed up'' and made a mistake, pleading with them not to make a report because it could ruin his career.

But Ang said he thought he was admitting to a consensual kiss, and had feared the consequences of breaching ADFA's non-fraternisation rules.

Mr Drumgold suggested Ang saw a message on a whiteboard in the hallway outside the female cadet's room when he came home, warning others she was drunk and might need watching over.

He then went into the darkly lit room, closed the door most of the way before getting into her bed.

The prosecution alleged Ang had a fixation on the cadet and had an ''unrequited love'' for her.

Ang will be sentenced in late May. He remains on bail.