The premise is good and the writing isn't horrible. I'm just not a huge fan of such instant, intense chemistry. It has to be written in a way that makes you feel it and believe it. It didn't pass my eye roll test.
I think that the reservations of the heroine were real and written in a way that you understood them. That I did like.
Overall, the book seemed to drag a bit and I didn't connect with the hero at all.