she can have the ring if you want her to have it. Mine kept hers, because she wanted to and i wanted her to. *insert Man in Chair marriage line and comic pause here*
The next girl who's lucky enough to have you ask, or to ask you, might want her own ring, and not that one. If it was new to you both (as suggested by the credit card mention) and not a family heirloom, then you decide together where it belongs. Some guys might not want a reminder of the dashed hopes, no matter what the intention/purpose of the piece was at the outset.
Will: They don't give out awards for helping people be gay... unless you count the Tonys.
"I guarantee that we'll have tough
times. I guarantee that at some point
one or both of us will want to get out.
But I also guarantee that if I don't
ask you to be mine, I'll regret it for
the rest of my life..."