My boyfriend been running a fever since last wednesday and his body aches and his head what does he have how would it go away.

Likely: Did you bf get vaccination for flu? He could have flu and it is likely to get better on its own. However if you did not get vaccinated you are risk of getting the infection. If the symptoms last more than 10 days, please see your doctor. Flu like symptoms can be the prodrome of a serious illness and it would be prudent to keep that in mind.