Nigerian Lady’s Face Swells After Relationship Of 6 Years Ended

according to her “after dating him for 6 years and we started planning our marriage suddenly after 2 weeks he came back and said he found the of his dream, it happens to be my best friend, he cancelled the wedding plans”

” I tried talking to him about how long we have been together, over 6years now but he ended my calls not knowing how painful I feel.”

What could have possibly gone wrong?