I agree with Scarlette and Piggiemommy. you can't house rabbits and guniea pigs together. One kick of a rabbits hind legs could instantly kill the guinea pig. Rabbits however are very social animals
and do like the company of another rabbit. You can't house two males together
but a male and a female will be perfect! Is your male neutered?? If not get him done. Not only will it allow you to have a female with him but it also helps with attitude problems and can also reduce health risks too. I introduce my male (now passed away) to his female friend when he was around 18 months old and they just hit it off beautifully. He was so happy to have a friend. He got lots of time with us but he still wanted more....they are very very very social animals and I wouldn't have just one ever again. Let me know if you will consider getting your male a rabbit friend and I can help you out on introductions etc. Sometimes it's not smooth sailing but a girl/boy match is the easiest to bond..especially if you get a young girl.