Drunk sister in law gets fucked in a hotel room

The whole family was on the beach, it was a family vacation. and during the day my sister-in-law drank a lot, and at night she was very drunk. my brother was drunk too, so he asked me to take his girlfriend to the hotel. i had to do this, so i took her to her room and waited for her while she showered. but when she came out, she lay down on the bed and fell asleep naked. i was very horny when i saw her naked and began to touch her body. at first it was just her legs, but then i touched her pussy, stuck my fingers in it and my cock went rock hard. he started masturbating so i looked at her and masturbated with her.