you'll turn 30 someday, and then feel grossed out by the concept of dating even a 22 year old, realizing how huge the chasm is between those life stages.
and then you'll think of it again in a few years, and again. the more time goes by, the more you feel like college-aged kids really do seem like "kids". and then you'll be 44, and the idea of men your age dating girls as young as 20 will make you nauseous, because they'll mostly look like kids to you. in appearance, but even moreso in behavior.
middle-aged men (particularly famous men) consistently dating women as young as possible without being illegal is not a situation of "adults dating adults", it's a pattern in a pedophilic society that says that 18 year old girls are the hottest and most desireable, women are old when they turn 26, and it's "totally normal" for men to lust after girls who are young enough to be their biological children
please re-prioritize why you felt the need to justify a celebrity's pattern of dating women who are barely even old enough to drink, to me, a person who is not your friend.