I’ve always had that as a question as well. I never remember hearing an alibi or why he wasn’t a suspect.

Then again, it is most often the boyfriend. I think when I initially listened to Serial I didn't realize that fact to quite the degree I know it now. That doesn't make him legally guilty, but it does seem to be the Bayesian center of likelihood.

She had a different boyfriend when she was murdered, so by your logic shouldn't it be Clinedinst in prison and Syed free?

Well, that's a pretty extreme interpretation of what I said. It's just one piece of bayesian evidence, not a 100% determiner. Are there any witnesses who claim that this other individual killed her? Because there is one for Adnan. Also, it seems like a recent ex is probably more dangerous than a new lover.