A ring? Aren't you skipping a few steps there, mate?
I mean, I ain't gonna try to stop you but...

Is it just me or does all the delinquent protagonists believe in proper marriage and the like?

Does bookstore clerk pay well? How long does he intend to work until he can buy a ring?

Lord-of-Roses said:

A ring? Aren't you skipping a few steps there, mate?
I mean, I ain't gonna try to stop you but...

It's explained in the (currently) untranslated panel.

He mixed up the whole confession and proposing thing.

Unbreakable said:

Is it just me or does all the delinquent protagonists believe in proper marriage and the like?

I've seen some pure-hearted delinquents in my day but I've never seen one so airheaded as to actually confuse confessing their love and straight up PROPOSING.