One Coupon Short of Marrying a Liar

Summary

My girlfriend, Lilith Fordson, has a lot of quirks. She creates her own marriage vouchers and tells me that she'll marry me after I collect 19 of them.

She gives me one when she's happy and gives me another one when I give her a present. I get another one when she misses my birthday because of work. She gives me another one when she wakes up late and misses the chance to send me off when I leave for a business trip.

I know that Lilith is ready to marry me when I eventually collect 18 marriage vouchers. I buy a bouquet of roses to surprise her with a proposal.