Random scenarios:

(gf=girlfriend
bf=boyfriend)

Scenario 1:
gf: do i have body odour?
bf: yeah you do, you stink
gf: omg! you're so mean! BREAK UP!

Scenario 2:
bf: hey! i got this Chanel no. 5 perfume for you
gf: wow! you're the best!
gf: wait a second... are you giving me perfume because you think i stink?
bf: yeah! how do you know!
gf: BREAK UP!

Scenario 3:
bf: hey! i got this Chanel no. 5 perfume for you
gf: wow! you're the best!
gf: wait a sec... are you giving me perfume because you think i stink?
bf: erm...uh...no! of course not! why would i think so?
gf: you are lying! do you know that trust and honesty are the most important values in a relationship! how can you lie to me! BREAK UP!

cheers