How Did You Deal With a Boyfriend Who Was Lying?

I found it very, very difficult to let go of the relationship. I was head over heels and really into him. He later admitted that he did meet people when he was away on holiday. And so obviously I was devastated by that. When I confronted him about this, well, he was still on holiday. He immediately went into like apology mode - which made me think, okay, maybe I need to rethink about giving him a second chance. Have you given people second chances like that in your other relationships? Yeah, yeah, I have done several times, pretty much for the same thing, lying, cheating. It's been pretty much the same topics each time.