if a person loves someone,he/she is open no matter how bad things are. if a girl/boy has a black under-arm. he/she should be frank enough to tell it to him/her in a nice way. don't ever try to tease the person about his/her black under-arm.
or you could at least be quite about it. if you like him/her that much, 'who cares about the black under-arm?' right guyz? if you really can't take the blackness, better end the relationship. heheheheheh!
ok..ask him/her.."honey, do u use charcoal as ur deodorant?"--sori, ds kinda rude..wel, it made me think..ok seriously, f ur prtner is com4tble wd u, u cn tel him/her directly, yes, it's gonna hurt at first..but, i think it's beter dan he/she hears it frm oder ppol.at least u'r saving ur partner frm teasers beforehand..but f u cnt acept it, dump him/her :(