I had this confused with another movie. I re-watched it the other day...
and I swore there was a scene where Rick felt confused because he started liking Terry and thought he might be gay or something, and then got angry, but was relieved, when he found out Terry was a girl. He was more upset because he didn't know the truth.
In "Just One Of The Guys" Rick does get mad but only because Terry kept the secret from him, but there was never any tension scene where he finds he has feelings for Terry and it confuses him because he doesn't realize Terry is a girl.
So what damn movie am I thinking off?