Of course, you can stop drinking and live a sober life. There is lots of hope, and I know all of us here have been very afraid when we set out on our recovery journey.
I do caution you though, because you can't do this because you want to keep a boyfriend. Honestly, it won't work. You need to do it for yourself because you love and value yourself. Drinking is only the first step and it takes many life changes to recover.
Some members here use AA which works for them, but others use different methods that work well for them, so take a look around and read and learn.