Most Helpful Guy
There's nothing wrong with that at all. It will work out pretty well for the woman since men come out of their prime at around 32-33 and women don't enter theirs until about 30 or so.
You'll likely not deal with "c'mon babe. . . just the tip" very often from the 40 year-old. lol. :)
Some will judge, but who cares. If he makes you happy, then go for it!
Most Helpful Girl
They are of age so I don't care. That was my first thought.
... well if I'm being honest my first thought was oh my god that's hot because I thought that you said 25 year old man and a 40 year old man.