You absolutely want a male. You'll end up with babies otherwise because they usually don't get spayed or neutered. Same sex bonds can be safe, but you would have to date them similar to dating bunnies. I've heard it is best to do the scary thing of kenneling them together and riding them around. Makes them bond faster if they are going to bond at all.
Also with same sex bonds, you may see more posturing between them because they still have to decide who is the dominant pig. It is actually quite cute to watch one be all 'tough' to make sure he is top-pig.
Don't forget the special pig pellets that have vitamin C added and oranges. Pigs are prone to scurvy because they don't make their own vitamin C.
Good luck with your new little guy! Pigs are a blast to watch and cuddle. Oh... and watch for his first popcorn!! Way too cute when they are happy!!
myheart