Boyfriend wets the bed after partying?

This has only happened once or twice, but when my boyfriend has gotten very drunk he wet my bed. Once was only a little. But last night he soaked the sheets. He tried to hide it from me but I knew what had happened, I just didn't know what to say. Early on we were sharing stories and he told me that one time he wet a girl's bed and it was really embarrassing, but we've never talked about it when he's done it with me.

This seems to be a recurring problem for him that happens only when he drinks too much. I always feel like he's just as drunk as everyone else, but if he's getting so drunk he wets the bed I feel like he might have a problem. Plus, I don't want him ruining my mattress or waking up in his pee. I just have no idea what to say or how to bring this up. Help please!
Boyfriend wets the bed after partying?
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