Before you separate, make SURE you two go thru counseling - and get the therapist advice on separation!!! If the therapist thinks it would be a good idea to separate, then follow that advice.
Therapy is always best before separating. You aren't thinking clearly when you're going thru something like this. Both parties are upset and their own issues are first on their minds -- they aren't thinking of the other party. So please see a therapist FIRST before you separate. You won't regret it.
God bless and please take care. Hugs, Lee