<human>: Throwaway because I don't want people to identify me yadda yadda.

Without going too much into details, the main issue that triggered this break is that my boyfriend and I crossed each other's boundaries - he constantly chat up a girl, deleted those texts and told me he only talks to her occasionally. I snooped and found out he was constantly talking to her, confronted him about it and panicked when he asked about how I know so I cooked up a lie saying someone told me. He found out that I snooped and got angry because he says that I don't trust him.
   

He said he needs time to cool down. We haven't been talking for the whole day. Reddit, what should I do? Help me stay sane. He was my rock, he was the one I constantly talked to when I have good news to share, the one I turned to when I was weak. Now I'm just lost without him...

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Boyfriend and I crossed each other's boundaries. He got pissed, wants time to cool down. What should I do to keep me sane?