Whether or not you believe your situation is an exception, you should always talk to your friend before making any crucial decisions.
Even though he lives in another state now, we have remained friends and talk maybe twice a year.
The rule is to be Honest (and if you liked him you coulda gone out with him)..I think that you woulda asked you're cousin first if she still had any feelings for him if not you coulda gone 4 it!
Although I am married now, I often wonder if it would have been appropriate to date my cousin's ex boyfriend.
He asked and I turned him down simply because he dated my cousin for abt 2 years.
From "he just doesn't get me" to "we're too different" to "why did we stay together THAT long," women tend to overanalyze past relationships.
However, the one thing that seems to be the unwritten rule among us is that we would never even consider dating our friends' exes. But now I realize this rule really needs more thought, because I believe there are two factors to consider before answering my girlfriend's Facebook question.
If the latter, we strongly advise against acting on your feelings.
Your crush will go away eventually, but a broken friendship is hard to mend. Even if you remain friends, your relationship might change. Are you willing to risk your friendship for the sake of a potential boyfriend?
The unspoken rules of girl code imply that it's basically never OK to date your friend's ex, especially your best friend's former boyfriend.
However, just like with any rule, there are exceptions.
Depending on the relationship your best friend and their ex had, it could be difficult for them to accept what you are telling them, but you have to think about your own happiness too in midlife.