The bad friend

So, a few years ago. I developed a gambling addiction where I would spend more than I had on me. To combat this. I limited myself to a restriction of £100 a month, to £20 and now I no longer gambling at all. I was doing well, and then the friend that used to hang out with me started to take long cruises aware of my problems decided because I'm so far away from home to go to a big Casino. Now, this almost triggered me. After we got home, I told him to never do that again. Like an idiot that I am, I trusted him and once again after a few weeks. He does it again, but this time. I told him, we are done. I got out of the car near the junction where it was safe to get out because of the traffic lights. He actually tried to lock me in, and I just went straight to the Bus station which managed to take me closer to home just by five miles.