I peed the bed at my boyfriend's house

This is so embarrassing but I literally just peed the bed and I'm at my boyfriend's parents house. I stayed over they're house last night and out of respect for his parents we sleep in different rooms. I peed before going to bed at around 1 am and it's only 7:30 now. I'm 21 and I seriously can't remember the last time I peed the bed but I don't know what to do!! My boyfriend is going to be waking me up in like half an hour to an hour and I'm not so embarrassed as to what he might say but I don't want his parents to find out. Please help!!!
UPDATE:::
He came in literally minutes after I posted this so I couldn't read the responses so I just told the truth. I had striped the sheets off and he asked me what I was doing and I told him. He was very sweet about it and laughed, hugged me, and told me it was ok. Then he washed the sheets and sprayed the mattress and flipped it and then he brought up to his room and cuddled. Putting a ring on this one 😂