Where to go from here?

hi guys just looking for some advice. My boyfriend and I are in a relationship now for 6 years. We have had our ups and downs. Lately he’s been different toward me so I had a gut feeling something was up so I did it! I went through his phone and what I found was nothing sort of betrayal! First off right off the bat I felt so guilty to invade his privacy but I just had to know what was up! He has a telegram account and I found he was chatting for girls asking them for oral sex and to meet up? Now a fantasy is a fantasy but he sent his actual number to them asking for this !! I’m so heartbroken

Where to go from here?
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