snoring
Methane!
One disadvantage of sharing a bed with someone is one gets to share the covers with the other. Another disadvantage is dealing with the other's snoring.
no disadvantage its all nice if its sum one nice
Snoring talking in sleep
crowded
Not enough room or the person snores
Sleep wild
snoring and sicknessess
For example, if a person has a problem with wanting their own personal space and the bed either being big or small but the person moves a lot in their sleep then it may interrupt the partner's sleep and thus being uncomfortable.
Sleeping with someone is usually referring to the act of sexual intercourse. It can also (although not usually) refer to sharing a bed with someone in a non-sexual way.
They sometimes take up all of bed or they steal all of the duvet! Even worse though some people fart!