This Bothers Me a Little Bit!

Do you think that Demi, Ashton, and her children find it a little odd that Demi's oldest daughter Rumor Willis, 17 is closer in age to Ashton (28) then he is to wife Demi, 43? 'Cause I'm not going to lie....It creeps me out a bit, especially when I see Rumor out with her step-father Ashton....And they look a little flirty...Too close for comfort for me!