DH may have some very valid reasons for not liking cosleeping and then again he may need some education. So to help you the most I must ask what is it that DH doesn't like? Poss. answers might include lack of intamacy(have sex in new and exciting locations, the shower, spare bedroom, livingroom), , lack of space(get a bigger bed, a cosleeper, or bring the crib in the room so baby can be near), fear or harming the baby (put the baby on the other side of you so DH can not roll on him), unrestful sleep (move baby so he is not next to dh, in side car ect.), fear of "lossing you to the baby(have special time set aside for dh after dc goes to sleep to reconnect, put baby on the other side of you so you and dh can cuddle, ect) or a scary one such as thoughts of the child in a sexual nature and he fears he will act on these thoughts. (hopefully not the last one, but if it is the case he should see a psyciatrist) Most of these things can be resolved by being resourceful. Open communication is key. It is also important for all of you to be happy. An unhappy mama has a hard time raising a happy kid, so talk to him, a divorce would be much worse than not cosleeping.
Good luck!