Older men will need direct stimulation of the penis to get an erection. However, premature ejaculation is almost never a problem in older men. They may even take longer periods of time to reach orgasm. Often a female partner welcomes this. The longer period allows her more time to reach orgasm as well.
Women tend to reach a sexual peak at a much later age than men do.
Older women may have thinning of the membranes in the vagina as they age, resulting in tenderness or bleeding during sex. This can easily be remedied with the use of water-based lubricants. These lubricants are available next to the condoms in drugstores and grocery stores. If pain or bleeding persists, even with the use of lubrication, consult your healthcare provider. Do not forget that aging does not protect you from sexually transmitted diseases.