Hi Lianne,
I can see how worried you are about if your partner’s relapsing from his rehab. May be you would like to contact us at The Icarus Trust as we are a charity that supports people who are dealing with a partner’s addiction. If you contact us, one of our trained people would be able to talk with you and should be able to answer your questions.
You can contact us on help@icarustrust.org or visit our website http://www.icarustrst.org
I hope this is helpful.
Good luck.