Yeah don't like the ditz. Dislike how the mc handles her relationship with her boyfriend, blowing off his worry that their relationship isn't working out and not communicating that you are unhappy in the relationship is also mean. Dislike the boyfriend trying to use force to make some sort of progress, using force isn't a replacement for communicating. Then ditz coming in and doing what she did, despite it being done against her will, that kind of thing would still shake any sort of trust the relationship might have had. Just all around bad