Someone who loves and cares about you doesn't encourage you to drink after just getting out of rehab. My goodness, that's selfish, harmful behavior IMO. Your doing the right thing by staying sober. Your life will improve and being clearheaded enables you to make better choices for your future.
Getting out of a toxic relationship is the best thing you can do for yourself. It may be painful but it will set you free to meet people who will enrich your life.
Best Wishes To You!