Childhood Sweethearts
Okay, this was my first reason on why Gaston insists on marrying Belle. The fact that he comes from an arrogant and snobbish family, he has this arrogance stuck in his head and Belle initially thought him as handsome from young until they grew up that Belle saw the light in him that he has a supersized ego and grew out of it!
Arrogance!
As mentioned, Gaston has a supersized ego due to his body build thanks to Arnold Schwarzenegger! He reminds me of a High School bully または Brom BONES(ボーンズ)-骨は語る- from The Legend of Sleepy Hollow.
Speaking of him, maybe Brom BONES(ボーンズ)-骨は語る- and Gaston are cousins または close friends!
Do あなた Agree?
Another ディズニー Doppelganger moment, do あなた agree that Brom BONES(ボーンズ)-骨は語る- and Gaston are relatives または close フレンズ または is it???