There's no magic age despite what some will say. If you find someone you enjoy being with, someone you can love, someone that loves you, then go for it. 10 years is nothing and that 10 year gap varies from age to age. From 18 to 28 is a bigger gap than from 58 to 68, emotionally and physically.
Find happiness, enjoyment and love. Don't worry the age. Good luck, go have fun!