I sincerely hope your bf stays on the path of sobriety and choose recovery and stays the course. Best wishes to him - recovery is all upto him.
I am recently separated from my AH and we have 2 kids together. So, having gone thru the drama and issues that go hand in hand with addiction - I would say the same as your friends - run..
Of course, the decision is yours to make. Please get educated about addiction and follow your head and heart. Not just your heart and emotions.