ive got you under my skin

The speaker describes being deeply attached to someone and unable to resist that attachment. At first, they say they have tried not to give in and recognize that the affair may not end well. But desire repeatedly wins over caution. The emotional movement is from attempted self-control to surrender, with the speaker accepting that the other person has a powerful hold on them.

“Under my skin” is an idiom meaning that someone affects you deeply and is hard to forget or ignore; it is not meant literally. The warning voice that speaks “in the night” can suggest the speaker’s private doubts or conscience, reminding them that the relationship may be hopeless. “Stop before I begin” implies that even an intention to resist fades as soon as the speaker thinks about the loved person.

The lyrics show a conflict between reason and desire, but they do not explain what makes the relationship risky or whether it is truly doomed. “Affair” may mean a romantic relationship, perhaps one the speaker sees as unwise, but the details are left open. The speaker’s willingness to “sacrifice anything” sounds intense and devoted, yet it may also hint at losing perspective. The song presents this attachment as both pleasurable and troubling.