Boyfriend texted a.....

I went on my boyfriends watch and found this. He messaged a prostitute!!! I confronted him and he said that his boss gave him the number for a massage....i googled the number and found that it was a tranny prostitute and then at around 3 he messaged me saying all this dirty stuff. I called the number as well and the mailbox was full and you had to subscribe. I can't stop thinking about this, I'm so scared to leave him because I love him so much but I can't handle this. He keeps denying and saying he didn't do it but I still don't believe him. She never replied but I'm so scared that he might have called and met up with her like I don't know what to do 😔😔