I am a Dragon (1952) Sagitauris and I have just met a Rat (1972) Leo

I am a female Dragon and have just met a Rat, there is a 20 year age difference would a relationship last given the large age difference? He does not know how old I am, I think he thinks I am a lot younger. He would like to catch up with me again, I am a little unsure? I am seeking a soul partner and this was a coincidence meeting. Many thanks.