feeling more proud x prouder ?
now I'm feeling even more proud of being her fan seeing that the compliment came from a person who didn't like her.
now I'm feeling prouder of being her fan seeing that the compliment came from a person who didn't like her.

Question

feeling more proud x prouder ?
now I'm feeling even more proud of being her fan seeing that the compliment came from a person who didn't like her.
now I'm feeling prouder of being her fan seeing that the compliment came from  a person who didn't like her.

Answer

Native speakers tend to use comparative adjectives in preference to the "more + adjective," construction.

So we would normally say "I feel much happier now," rather than "I feel more happy now."

However, in this case, for a reason that I cannot explain, I tend to agree with Anthony that 'more proud,' sounds better.

Answer

These are interchangeable as far as I understand.

Answer

More proud is correct

To me "prouder" sounds weird, I would say more proud.

Evden çıkmadan dil öğrenme fırsatını kaçırmayın. Deneyimli dil eğitmenlerimizden oluşan seçkimize göz atın ve ilk dersinize şimdi kaydolun!