On a side note-you two obviously have a history and it sounds like you don't want to be ENEMIES.
So practice the communication technique. It works famously whether you are intimate partners, friends, coworkers or even just acquaintances.
People OFTEN misconstrue what another means and if the person speaking is important to you OR the info they are sharing is important to you, it's imperative to ensure you comprehend it!
Practice it. I'm not saying it will create a dynamic that makes you two compatible as lovers. But it will undoubtedly improve your understanding of one another which is a great benefit in ANY relationship!
"Love As Thou Wilt"