Someone requested a commentary on age differences. There are no real moral or ethical implications of dating a person older or younger than yourself.
Most people do find an attraction to someone a few years older or younger.
So one must assume that we are talking of grossly differing age differences. The first thing that needs to be determined is if there is an unhealthy reason for not choosing a person of ones similar age. This would be true of the predatory adult who needs to control and manipulate another person and therefore seeks a weaker type of person who sometimes is also younger. This type of predatory person is dangerous and may be violent. Now, having said that I must say that my own mother married a man 10 years her senior and was quite happy.