The telephone poll of 1,100 adults, conducted Nov. 16-19, found 36 percent of respondents living with a significant other found their partner's TV choices to be their biggest annoyance about the living situation, while 16 percent picked doing household chores, 13 percent picked sharing a bathroom and 8 percent picked reading in bed.
The poll also found 71 percent of respondents said they got along well with their partner's family, but the number dropped to 62 percent when only unmarried couples living together were tallied.
Eighty-two percent of respondents said they have not snooped in their significant other's email, but 19 percent of females and 15 percent of males admitted to secretly looking at their partner's accounts.
The poll had a margin of error of 3 percentage points.
Watch: Robber bugs clerk, gets sprayed with Raid
'Zombie-proof' cabin being sold online