Husbands affair

I have been happily married for 13 years to a wonderful man who adores me or so I thought. I recently found out and he confessed to cheating on me! He was at first apologetic and I was heartbroken and ready to die. Then he turned angry and is telling me I am pushing him away because I want answers about the affair. He wont tell me anything. Still has his phone and accounts locked. He is clearly still sneaking around with this person. It has been 3 weeks and my life has fallen apart. To make things worse I am 4 weeks away from graduating nursing school and on the verge of failing. I am tired of begging and crying while he continues to be rude and treat me badly while telling me he loves me and never stopped loving me. If not for our 3 beautiful daughters he would have been gone on day 1. I am so torn. Do I give up? Do I wait it out (he is clearly still deceiving me and lying) I cant eat. I cant sleep. The anxiety is through the roof and my mind just focuses on nothing but this affair. He did say he ended it but his behavior makes me believe otherwise.

So so broken these days.