Is OTHER wrong in the post ? POST : Sorry for formatting, I'm on mobile.

Every year, for the past 6 years my family has gone on a ski trip on family Day weekend in February. Not every year, but often this means I'm away for Valentine's Day.

I have never had a girlfriend to worry about leaving, until this year. We have been together for three months and she's a little bit upset that I won't be here for February 14th. Even though I promised we would celebrate it the day before.

She keeps guilt tripping me and complaining that I'm not going to be here, and I feel really bad. But I would feel worse if I ditched my family for her.

Am I the asshole for not staying in town to celebrate Valentine's Day with my girlfriend? 
