So my partner has this friend that I don't like Stephen. He's into drugs been in prison just bad news. He has gotten my partner in trouble too in the past. I told my partner to stay away from him. And as far as I knew he had. The past 4 months my partner has been away all day on his days off or out all night after his work. Telling me he's away to see his friend mark that I've met once. I bumped into mark the other week and he said he hasn't seen my partner for ages. So tonight my partner said he was going to see mark. I followed him and saw him going into stephens. I confronted him when he came home and he lied and said he wasn't there. I feel upset been lied too for months and he doenst seem to care about my feelings or respect my wishes. He even took money from our rent money jar and got drunk I'm assuming with Stephen now. What should I do?