A bro-ner can exist among females, but mostly exists within guy-to-guy or guy-to-girl relationships.
2. Gabby's bro-ner for Spencer had been there since first grade when they met. It increased when they realized they had the same birthday.
A:observing and/or participating in feats of extreme manliness
B: while doing or seeing something extremely Bromantic.
B: I was watching the trailer for "Brokeback Mountain", and popped a huge Broner.