Well if i were u i would ' I woulst listen to the people who say "if hes happy then u shall respects that and move on."NO dont listen to that u have a point she is clearly to young for him .you should talk to him about it and let him know how u feel.so u guys can mabe get on the same page.
Luciana.c
@lovelywife25 I was married to a woman 25 years older than me for five years because until she passed away from cancer her daughter was 21 I helped her put her daughter through school by the way the daughter hates my guts don't ask me why