What's he hiding?

I recently asked a question about my boyfriend he started a new job and a women from him work was constantly messaging him he's promised there's nothing going on
But for the past month he's not let me go near him we used to have sex twice a day and now there's nothing everytime I go to touch him he moves my hand away and says he's tired or he needs a wee or a shower should I be worried
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He was constantly deleting her messages and hiding his phone even if he walked out the room he would come back and grab his phone
In his last job I found him messaging a women from work and it turned out he told her we wasn't together and that they was seeing each other he told me he had to work late new year's eve and it turned out he was at hers
We split up and then he begged me to "come back home where I belong"
For a year now things have been good but now he's acting like he did last time
What's he hiding?
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