Hello There are a few age related changes in human sexual response cycle. Arousal is slow to build up so it takes a bit more time for reaching orgasm. There can be sexual health issues like dryness of vagina or easy fatiguability. You should try to spend time together , enjoy the feeling of physical closeness, maximise body to body touch in different areas, little bit innovation in giving and receiving pleasure and moderate exercise helps to satisfy each other. body and genital rubbing , bathing and drying each other, oral stimulation. Despite all these, some times, there may be difficulties in erection or reaching orgasm. You need to learn to laugh it off Dr Saatiish Jhuntrraa