Can someone please tell me how bad and frequent the sexual content is in the TV show Lost? Thank you

Well, if you count a few kisses and declaration of love as "bad"--then it's pretty bad.

There's been no nudity, and only a few scenes where sex was hinted at in the entire time it's been on.

Most of the "sex" scenes start with a kiss, then cut to another scene, and you come back and they're curled up in the blankets together afterwards.