Roommate's alarm wakes you up too

Roommate's alarm wakes you up too...

Roommate's alarm wakes you up too this is most common problem mostly phase by every roommate.

What are the reason behind the Roommate's alarm.  

1. Morning office meeting
2. Exam 
3. Drop girlfriend to railway station
4. Pick girlfriend from railway station
5. Girlfriend's Birthday 
6. Girlfriend's office work
7. Girlfriend's home work
8. Drop Girlfriend to there office
9. ....Many more related to Girlfriend's. 

But problem to other Roommate B. All above reason's are for roommate A why other roommate suffer.  All advantages of girlfriend is for only Roommate A. He will never share all these. . . .HA HA HA...

This problem will be resolve. Anybody can tell me what's the way both are happy. I need your reply in comment section maybe helpful for ROOMMATE A and B. 

This problem is generally faced by Roommates  these are GIRLS  or  BOYS