A bedtime pal is someone close to you who sleeps alongside you. This person will typically spend a night with you and make you laugh, smile and maybe even burn your arm on a radiator. However it all works out when they kiss and hug you in the morning. Bedtime pals can typically become acquainted after a night out on the town.
Girl: I miss my bedtime pal even though he squished me, told me my kisses were awful and burnt my arm on a radiator.