Need suggestions

Three years ago I came to know that my wife was texting with her colleague.....I did not know what kind of messages were being exchanged but it disturbed me to the core. Afetr some months while I was sleeping her phone rang which kind of woke me up but I did not move or did not react as I thought that her friend might be calling. But my wife started to breathe very fast as if hyperventilating..then I her her side of conversation (she was on the bed besides me)...Yes he is here!!!............then nothing. I thought that she will pass me the phone as her words clearly mentioned that someone was asking about me....but she did not give me the phone.....I was suddenly very concerned. Is she having an affair??? This question did not let me sleep....After few hours of fake sleep I got out of bed to go washroom. When I saw her phone in her nightstand I picked it up and took it with me to the washroom.I opened her call log and there IT was .....nothing......the last entry in her call log was mine...I then knew she is having an affair and decided to confront then and there. I calmly got in bed besides her and after 10 mins I asked her who the caller was... suddenly she was very nervous....she told me that it was her colleague. And I asked her for the reason of the call at this time of night. She said he was drunk and simply calling everyone.And I again asked her why he was asking about me. She said he did not. I told her about the reply she had given ...yes he is here.....can you explain it.....he asked about you because he did not wanted to disturb your sleep (animated tone).........after few minutes and her final chance to come clean I asked her about the call log.She very calmly said that she does not wand to keep any logs which is of no use........... I was very frustrated and angry so I dressed took my wallet and my car key and headed toward the liquor shop....I drank several botteles of beer. When I came home she was waiting for me and was very anxious. I went near her and asked...Did you sleep with him?...NO......did you kiss him?.........YES (barely audible)........and what else did you do with him?......He fondeled my breasts.And that was it for me .(I will divorce her)...In the morning she cried and told me that she made a huge mistake and will never repeat it again...she promised never to speak with him again...After few days and many thoughts later I decided to give her a chance as I love her very much.....she was very happy and attentive towards my needs.she sarted to initiate sex which I thought because of guilt. Life was good ....,.......until recently I started noticing some changes. She gets always angry with me without reason.She ignores my presence...she talks very less with me......But there is no unknown phone calls ...no messages..no mail....as I keep a very close watch.....(including all her social media accounts).........A very cruel thought popped in my head (cruel for me or her...dunno).....I stopped having any kind of intimacy with her ...no kissses....no sex....I wanted her to initiate again.....and how much time will it take.......It has been THREE months I did not have sex with her...but she acts as if nothing is changed.............

Now I am very confused and need a suggestion........what should I do???