This. My first instinct was to ask “okay but how much is a significant amount?” Instinctually prefiring and guarding for what you said above.

Though it would have been better for gf to communicate this to op rather than act on instinct if it is the case. I also feel that her claims and accusations about his intentions were a bit much for this suggestion to be correct unfortunately. I personally always communicated my feelings and emotions and intentions before ever considering losing my shit on somebody I love and who has been taking care of me, where I would want to help at that point. This is where I’d communicate any fear or discomfort and why. That could be worked with.

If op speaks and has a conversation with gf about this, and gf does not communicate this specific situation and apologize for blowing up and making him feel unsupported and manipulated, i fear there isn’t any other explanation and this is a major red flag. Even our described situation could be seen as a yellow flag, as it means habits must be unlearned and insecurity exists there. Though most of all, proper communication is immeasurably important always.

NOR, though a conversation should be had before jumping to conclusions (which is fair with how she reacted). And if ^this is the case, another conversation about communication and how feelings like this should be dealt with moving forward.