I think Lynn Halsey-Taylor was a very self-centered and ugly (not in looks) character who was only out for herself and didn't care who she hurt if it would help her along. I know this topic asks not to take the sequel into consideration, but I will say that I felt in Any Which Way
they tried to turn this around and try to make us believe it was the other... that she loved him all along and perhaps she was afraid to be in a serious relationship at the time. But I didn't buy the turn-around. More on that when we do the Any Which Way You Can
As for what Philo wanted... well for some reason I haven't yet fathomed, he really fell for this girl... hook, line and sinker. I think he wanted a serious relationship with her... I believe he was even thinking she was "the one".
We've all made relationship choice mistakes, eh? So maybe we're supposed to feel some solidarity with Philo when he realizes the girl he loved was such an awful person. I said in the "least favorite scene" thread that the "I hate you" scene was just awful, but when Lynn sneers "I need it just like anybody else," who could still like this woman (if they did prior to this?) On the other hand... you really gotta give Philo a lot of credit for just standing there, and then walking away without a word. (Great performance there by Clint, even though I hate watching that scene.