I've noticed this a few times...men buy their girlfriend an e-ring and don't propose for 6 months, 8 months...a YEAR!
And the worst offenders tease the gf by letting her occasionally see the ring and then take it away.
I can see buying an e-ring and waiting a few weeks for a holiday or vacation to make the proposal special...that seems like part of the overall plan. But the ones who buy the ring and leave the woman hanging...why? And why would a woman stay with a man that played her like that?