You've gone full circle mate - you've now got the same hair-do that you had in the first picture :- P
I do have to agree with all your lady friends though - striking resemblance between yourself and your sons. . . it's almost like your related in some way :- )
This is fascinating to me - in the 2nd and 3rd, you're a ringer for Riley (or vice versa) and in the last couple you look just like Brian (or vice versa). Very cool! You should do side-by-sides with your sons of you at their ages.