I would just admit it and do my best to not lie to that person. Personally, im pretty honest and if i get into a situation where i may be tempted to lie then I tell them that Id rather not tell them because I dont want to lie. People actually respect that and don't press me further.
lying only makes it worse in the end. why lie about them if they was insignificant?
Don't know because I would not be lying in the first place..
truth is always better