The thing is Jack2 would have to crack on with Grace because she is the only one not really happily coupled up at the moment, and he would need to couple up quickly to stay in.
I think he did like Laura - he probably didn't see it going far outside of the villa either but they enjoyed each others company and it was going well until that biatch Georgia got involved
But when Laura laid it out like that to him when she was dumping him, he realised it wasn't even worth staying together in the villa for coupling sake.
Laura and Dr Alex definitely need to couple up now!
Alex looked actual purple in that first look clip! 