<human>: Could you distill the essence of the text into 1-3 sentences?

So basically me and her planned a trip to Japan and I decided to invite my friend since the more people the better right ?

The beginning of the trip was great but now I feel as if she's only paying attention to my friend (We went to some restaurants and she only cares about what he wants and puts food onto his plate)

I really don't know why this is happening as me and her are very close and I'm at a loss at why she's suddenly changed her behaviour towards me even and talking to him so much even though we always go out together and she does not want to invite him.
<bot>: Invited friend to chill with me and close female friend, now female friend seems like she's lost all interest in me. Am I being jealous ? Or am I slowly losing her.