There are several alternative options to "bedmates" that one can utilize depending on the context. "Bed companions" is a common synonym that is often used to describe individuals who share a bed. Another option is "sleep partners," which is especially relevant in the case of people who co-sleep. Similarly, "sleep buddies" can also be used in a more informal or playful context. Finally, in the context of intimate relationships, the term "bedfellows" is often used to describe individuals who share a bed and are also romantically involved with each other. Ultimately, the word chosen will depend on the tone and context in which it is used.