.. yeah right ... *alarm bells ringing*
Valentine's Day is known by all the DA agencies and support groups as being one of the worst times (along with Xmas and New Year) for domestic violence incidents.
If he was going to buy the trinkets for the bracelet (probably one of those Pandora type charm bracelets), then he would've done so prior to Valentine's Day. Anyone can say that they were going to buy something, the fact is that he didn't, and he didn't buy them in time for Valentine's Day. I bet you anything you like Reeva would've been upset by it .. probably not so much at first and they 'both agreed not to make a big thing of it' but then as the night went on it would've kept rearing it's ugly head again, developing into a full blow row.