If anyone here reads or watched Yamada-kun to Lv999 no Koi wo Suru that's almost how Akane ended up in her underwear in Akto's bed (he didn't sleep in it with her though though). She got drunk making him listen to her crying about her ex and passed out. He carried her to his place because he thought it would be to cruel to leave her on the street. At his place she puke, he took off her clothes to wash, and put her in his bed. When she woke up the next day she initially thought she'd been... picked up.