Yes, but what's wrong with a kid watching a straight couple kissing? The more the better I'd say.
I did say that somewhere, but I'll repeat -- nobody will succeed in turning you to homo if you're straight, but I object when children are told that being gay is 'being special' (all young people want to be special and sometimes they even invent things) or even 'being normal' (homosexuality is not, strictly speaking, normal). It is important that children are told that being straight is normal. They should be told that if a boy likes a girl it's normal, but when a boy likes a boy he might be... well, mistaken.
I can only repeat -- if you don't plan to have sex with the person you speak with, is there really any need telling him or her about your sexual preferences or be interested in his (hers)?It genuinely boggles my mind how people can have any reaction other than "oh, OK then" to someone else's sexuality.