I do not think that one can go wrong with flowers. I would try to play down transparency and play up courting.

Transparency means that you would be accountable to her as if she were your manager. This is not the best setup for a couple, on too many grounds to mention. Some transparency - which you gave her to show that you would not continue - is good, but weaving transparency into your lifestyle is not.

In regards to Perna's concern, my question would be - is your gf living alone or with family/roommates/other people? If she is living alone, I think it is OK, but if she isn't, and, if you normally would not sing serenades underneath her balcony but now all of the sudden would show up with flowers, she might not like it - her family might start asking her questions that she would prefer not to field. It may be embarrassing for her. We do not know enough to predict her reaction if there are any 3rd parties involved.