Ok so there's a bit of a 'love' story there and it's soft porn for those who like a bit of light bondage but on the whole it's just not very good.
It's not as erotic as the author probably thinks it is, it's extremely repetitive and predictable and is certainly not 'liberating' as some have said.
I'm also sure I'm not being unreasonable to think that noone other than in their teenage fantasies has an orgasm the first time they have sex or makes a guy come in 10 seconds the first time her lips ever touch a penis.