Hi Amber, It sounds like your bromeliad has reached the point of doing what they all eventually do,slowly die out after blooming.Its what bromeliads do. You've given it the best of care,but cannot do much about what is happening,other than to remove the unsightly leaves,and cut off the bloom stem if you want to have it look fairly decent for awhile longer. The good news is,that they most often put out a new plant,an offset,or pup,from the base or cup,that will grow to take over from the original plant. For now,best to not put water in the center cup,as it may cause stem rot. You can try putting the plant outdoors in shade or bright light,but not full sun,and this may help produce the offset that will become the new plant. You can find out more plant care info at
www.fcbs.org ,which has a good deal of information and a photo section to view. regards,Bob C.