Hold on 2 seconds.... 18 x 2.5 = 45...
You're with a guy who actually
is twice your age?? Well 2.5 times exactly
I'd say don't even go there hun
I'm pretty against younger girl vs older married guy "who will leave his wife when the kids are older"... it's usually a load of crap
Also, how much of the attraction do you think is to do with it being exciting and dangerous and taboo? Will you feel the same when you're a few years down the line?
Worse, assuming it did work out (i'm not by the way) then when you're 30 and thinking about kids he's gonna be in his late 50s... umm eww. The maths gets worse the older you get - he'd be 70 and getting damn old and creaky before you hit 50.
I know the chances of it working out like that are slim but then, what is the point in going there if it's not gonna work out?