you didnt mention how long you have been seeing her? first opinion, if its a fairly new relationship, it sounds like she might have been hurt before by someone cheating on her and what you've 'apparently done' in her mind is unforgivable.i cant see anyone going to those lengths just to have an excuse to finish it, and it sounded as if you were getting serious.but this has obviously been festering away and shes been nursing her wrath for 24 hours.id leave her for a few days and let her cool off, i think when she does you should confess how daft you were trying to make her jealous.she might not beleive anyone would do something as pathetic(but most of us have done the same sort of thing)just shows how it can backfire!if she doesnt give in within a week, id guess you'd be better off without her.