You should never, ever date a woman who is more than a week younger than you are.
I'm joking. If the two of you appear equal or similar in age and beauty, there isn't much reason to worry (except for the usual romantic troubles of course).
The thoughts I've expressed in the above post are carefully considered and offered in good faith.
And friendliness towards the world is happiness for him who is forbearing with living beings. -- Ud. 2:1
To his own ruin the fool gains knowledge, for it cleaves his head and destroys his innate goodness. -- Dhp 72