yes there is hope but as already stated its the pigs characters and what they have been use to, at one time i was called a lier for keeping boars together, but its changing slightly where as they dont say never anymore its all about characters now and some boars form very close bonds to another male pig when all the odds were stacked against them, watch and observe and be ready for any fights little moans or rumbles are fine thats all part of it, but anything more is a no, all my boys except 2 are togther even ones i had thought was a never no way no chance, the 2 alone are hopefully one day going to find their perfect cage mate I never give up for good good luck but be alert, let them run around together give them 2 bowls 2 water bottles and plenty of hidey places lessening the chance of a dispute,