Confused????

Me and my bf have been together for almost 2 years now. We met online right after he had gotten out of rehab for drug abuse. We talked everyday and hung out when able for about a month before he relapsed and had to go back to rehab again. I stuck by him through the time he was there which was only a two week detox program (basically). After he got out I gave him 15 letters telling him how I felt for those 2 weeks each day. We made it official the day he got out because he had willing gone back and knew he messed up. We moved in together 4 months later and he ended up relapsing again because I have been having issues in the bedroom. He refused inpatient this time and opted for outpatient which then took months for him to finally drop the habit. We had a huge fight about 2 weeks ago due to his jealousy and insecurities and he has since starting smoking pot which to me is better than his previous addiction, but it's still another addiction. I have been going to the dr to figure out my issues but I don't know if I should keep giving him chances or let him go???( he also has a felony due to him using years before we got together but has caused us financial hardship now that it has finally made it through the system and he has his sentencing) I love him to death but I just don't know what to do. I can't ask my mom because she doesn't know about his past. Any advice from someone who has been there done it would be extremely helpful and please no rude comments about him and his past just in sight please.