Help me find a manga plzzz

Hey everyone i really need help finding a manga from ages ago.

BL comic where ML is a tall buff patient in a mental hospital and

Had a breakdown, then he mistakes MC for his ex “Jane.” MC dark-haired,

met him when visiting a nurse for her birthday, nurse begs MC

to take him home, they start living together and slowly the tops memory’s come back

Read around 5 years ago in full colour. If this sounds familiar pls let me know!