Just long enough for her to convince to me that she's a liar

[Matthew, Luke, and Alex finally sit together for the first time] Luke:
So what happened with your psycho? [there's a pause] Luke:
Oh, you can say it in front of Alex. She knows the whole story anyway. Matthew:
Sometimes when you see someone from afar you develop a fantasy. Then when you see them up close, nine times out of ten, you wish you hadn't. Luke:
[Luke smiles]
I have no idea what you're talking about. Matthew:
I was confused, so I went back to her apartment, and I thought I'd find what I was looking for, but I found something else. Luke:
Did you talk to her? Matthew:
Just long enough for her to convince to me that she's a liar