How to approach it???!!!

I been talking to this guy several months now. Well last night I went through his phone I had this gut feeling. Aww man and what I saw was he was a fuckin thot!!! Galore!!! Fucking his two ex’s and speaking too like 6 woman.. obviously I’m fall back but how to approach it. This man stays with me at least 4 days a week. Just played good game but tables are about to turn. Just initiating it idk how !!?