I went on a trip with a girl who is in love with me
Why did you go on a trip with this girl who loves you?
I'm feeling good that I am of great interest to her.
It is nice to spend time with someone that likes you. Make sure you are on the same page with each other.
She's a nice person. Going on a trip with her to LA is fun.
It is a good sign that you two are able to get along and like spending time with each other. It bodes well for the future.