Challenging circumstances in a budding relationship

I'm a 33-year-old woman, attractive and well-liked, with a great social circle and a positive outlook on life. I've recently entered a wonderful relationship with a generous 39-year-old man whom I truly care for. He's thoughtful, a fire sign, and is so attentive—often bringing me food and giving me foot massages every night if I ask. He also takes care of my bills and comes home on time every night. We're approaching the four-month mark in our relationship, but I've noticed our intimacy has dwindled to just once a week, if I’m lucky. When I ask him about it, he reassures me that everything is okay, despite it previously being four or five times a week. This shift made me feel compelled to check his phone at night, even though we both have each other's passwords. In the deleted messages, I discovered that he was using an escort messaging service and inquired about a quick visit. I was devastated. I attempted to bring it up subtly, but I didn’t want to reveal that I had snooped. I asked him to communicate openly if something was wrong or if he needed a break, but he seemed oblivious and insisted I clarify my concerns. I wanted to speak up but felt stuck. If we were to part ways, not only would I face financial challenges, but our families are intertwined, having known each other for three years. How should I confront him about my findings? **TL;DR:** I've noticed a decline in our physical relationship and found evidence of him seeking escorts. I'm heartbroken and unsure how to confront him about it.