This shows: if you really want to do stuff with a girl -- you better at least have some money.
Anyways. My impression on this relationship at this point. It seems: whatever spice they had - it's either gone - or they cling to the ways beforehand (yet want more than that). Unfortunately, the transition from friendship-to-relationship requires handling this kind of change. I mean: for gosh sakes, they slept together in bed (at least once). Moments of affection shouldn't be embarrassing, including the punishment game in the bus. They shoulda been laughing or at least smiling after that.
So, whether this relationship lasts or not will depend on how their crisis will be handled. Given the track record of the series so far, it will be handled well; otherwise, no happy ending.