Curtis' behaviour is all about the cameras and popularity, which is why none of it makes sense.
He was never that into Amy, but acted and played the game as he thought they were popular with the public (the Jack/Dani couple).
During the tweets ep, and when they revealed the top 3 couples, just before Casa Amor obviously shocked him and changed his game massively.
Unless there was drastic editing, he hardly knew Jourdan at all before asking her to couple up with him half an hour before the recoupling in Casa Amor. He'd obviously decided he was going to ditch Amy but bizarrely didn't seem to make any effort to win any girls in Casa Amor over.
So he's a game player that fucked it up. Not a nice person.
Anton Belle arse shaving is obvs about camera time as well.
It's too scripted and orchestrated this year.