I’m sorry to hear about your past relationship, it’s hard to forget the scars that are left. I am in a similar situation with my best guy friend as well, we do everything in the couple book except for physical touch and there really isn’t sexual tension between us and this is the reason why I haven’t brought it up with him. Our relationship is a bit more complicated and different from others but I know for sure that we are both to scared to bring anything up (when it comes to serious talks) because we are both also afraid of what would happen, since our friendship is something we both really cherish.
I think if there is sexual tension between you two, then he most likely feels the same way and there is nothing wrong with ever making the first move as a woman. My personal philosophy is that if you like someone 100% then you should definitely go for it. Because if you don’t you would only waste time thinking about “what ifs” and some guys are really dense/shy/or idiots when it comes to a girls feelings, so be very clear.
I wish you the best of luck! Let me know how it all works out!