Is white lies bad in a relationship ?

lilly

My boyfriend I’m catching him out on white lies lately it just happened there now. He lives with his father but he rang me saying something happened with his mother and he was going to stay in his mothers house tonight. I was concerned and was asking him questions over snapchat about his mother I realised he was replying very fast for someone dealing with family issues I checked his Snapchat location and it showed he hadn’t left his house yet. He was telling me how he was laid in his mother’s bed waiting for her to fall asleep. Yet still checking his Snapchat location it didn’t move. I started questioning him about it .. like how did you get to your mothers house so fast and stuff he then turned off his location so he was clearly lying. But why would he make up such a lie I’m so mad at him should I confront him on these lies or try avoid confrontation