Most Helpful Girl
If she had any interest in you before without you flaunting your worth it was clearly your personality and your behaviour she was interested in so take comfort from that. But the others were right, if her attention was so quickly caught by a guy showing off his wealth you dodged a bullet. If a guy wants to show off like that go ahead, personally i think it shows they don't have much else to offer, but more fool the girls flocking to them and missing out on guys of far more decent character
Most Helpful Guy
If she is swayed by that so much, she isn't worth the effort. If a meaningful relationship is your goal, keep on keeping on.