I’m a female member.

A papa I’ve been seeing for a year gave me a gift on an ordinary day. It was the first time I’d ever received a gift through papa-katsu (compensated dating in Japan), so I was really happy. However, there was also a letter with it, and its contents have left me shaken. In short, he wrote that he’d been struggling with something for several years and had felt like he wanted to die, but after meeting me, he started feeling that he wanted to live a little longer, so he was grateful to me. The rest of the letter was generally quite negative, and there were parts that made me wonder whether he might be depressed. (Normally, my papa is cheerful and doesn’t seem that way at all.) Since he’s opened up to me—someone much younger than him and his papa-katsu partner—about such a sensitive personal issue, I’d like to support him if there’s anything I can do. What would be the best way to respond? Would it be better to continue treating him as usual rather than acting overly concerned? I’d be grateful for any advice.