You asked for practical take aways, so I'll say this:

Get good at communicating and being vulnerable. I know online spaces will tell you this is dangerous, and that your partner might leave you. Someone with this sort of background needs to be 'seen', and loved for who they are, and the only way that happens is if they truly know you. Second, realize that your partner is not the sole source of all your feelings about them. You're seeing the world through trauma colored glasses, and it often helps to take a step back, take a breath and ask yourself why you're feeling what your feeling rather than acting on it immediately.