thank you all for your input .
I do know what im going to do/doing , so did not post to ask for guidance.
partner was never bi .. but we tried a threesome & things turned for better/worse(still working it out in my mind )
my partner see her everyday , for the past 5 months & yes I was angry at the start , then bitter , disappointed , sad .. all the feelings you wouldn't wish on your enemy..
but I have got through it & now am stronger than ever & hope this may help anyone else going through the same thing ..
I still love her & wish to see her happy (honestly).. but this has certainly changed my views on a lot of things .. especially LOVE !!
I do not run away from anything & have tried to tell my partner that they would be better off going away together but she wants to stay ..
ps .. yes I have thought long & hard bout seeing someone else .. but ..

should clarify ..
I am MALE & my partner of many yrs is FEMALE & other person is also female .
am not looking for smartass comments from dikheds , just some honest thoughts from other people ..

your other half has fallen in love with someone else .. but insists they love you as well ..
stay or go .. ??????