@Corall
Going against the grain here. I would raise my eyebrows a little bit, but 22 and 16 is not a massive age gap, nor is the younger one 'too young.' 16 is the age of consent, and 22 is hardly an old man is it?! (Or old woman!!!)
I know plenty of older people (70+) who got married when she was 19-20, and he was 24-26, (the woman being younger was more common many years ago,) and they started dating at around 16/17, and 20/21. No-one batted an eyelid then, and there's no need to now. No need for all the pearl clutching!
I know a woman right now, who is 35, and she's dating a 19 y.o. 'man.' In fact he's living with her (been living with her since February, and she's only been dating him since last December!) So he moved in almost immediately.
She has been getting her 2 y.o. and 4 y.o. DC to call him 'daddy.' No idea where the 'daddies' are but I have never seen them. But yeah, this 19 y.o. playing daddy, being called daddy, and posting on Facebook about how he worships his little family - with photos of him with the 2 DC (and her too,) all over facebook: now THAT is 'dodgy.' When you look through his facebook photos, you only need to go back to the year before last, to see photos of him at school! She would have been 33 then! 😖
As I said in my last post though, it's got nothing to do with you @Corall, so I don't know why you're so invested in it that you need to start a thread on Mumsnet about it!