paano naman ilelet go yung relationship na walang closure? di ko kasi talaga maintindihan,ni konting effort sa part nya wala.kahit man lang simpleng sorry wala 
There is always closure, if desired -- que mag isa ka walk away, que 2 kayo declare: It's over.
IMO, kahit deadma or does not leave 1 party -- hindi kelangan ng other party any declaration or moving out by the other -- basta nag decide e 1 party to move on, closure na yan. Kahit na goes home o sleep ith ou every night but you 2 re is connected -- closure na rin yan.
IMO, there is Closure even with things unsaid.
Or are you referring to "closure of the betrayal = putting it all behind and starting over"?
If your spouse who betrayed you is not in CONTINUING REMORSE & REFORM -- eh up to you na what to do.
Puedeng end the marriage kesa wait for the repeat performance of betrayal.
Or, stick around doing more to save the marriage, praying & hoping too ma Boink! into fidelity the philandering spouse.
Decide what you can tolerate or want to do, given your current limitations/constraints.
Sarili mo lang puede mo diskartehan . Kasi, hello, you cannot force/demand a person into remorse nor to change into a non-philanderer.
Hindi man lang mag "Sorry"? may magagawa ka? What?! Tell him to say "Sorry" & oo nga sinabi pero walang commitment behind that spoken "sorry". What's the point?
So there, puede ka mag- forgive kahit he is not asking for forgiveness
Puede ka stay married kahit na his actions shout: leave me! Go way! Disappear!
It is all up to you saan mo pwesto yourself, but you should not expect anything from the other person.
hindi kayo pareho ng desires, conscience & perspective.
Just focus on & work towards your best interests; and everything will be okay in the end for you. .