Is AUTHOR wrong in the post ? POST : So basically, my girlfriend and I have been dating for a relatively short time (5 mo.) and we have been long distance for about 3 of those months. We have a solid relationship, not in love yet, but really enjoy spending time with each other, sex is great, enjoy each other's company, and are very similar in many ways. 

Recently I have been concerned about the amount of time we get to spend with each other. It's very difficult to develop a relationship with her in NY and myself in Michigan. Her birthday is in May and she is going to Florida to celebrate with her friends a week before her birthday. After asking what she was doing ON her bday in NY, she told me her friend is coming the day before her bday and staying with her the weekend. I made it apparent I was a bit peeved that she did not express she wanted me there for her birthday, something I thought was pretty normal for a budding relationship. She reassured me that she would be in our hometown a week after her birthday. I assumed from that she meant we would make time to celebrate then. She lives in a small, one room apartment so visiting her while her friends are staying with her is not an option. Should I feel upset that she did not invite me or express she'd like me there ON her actual birthday in NY? I guess I feel like she should want me there but is fine with spending time with her friends over me. I have expressed I would fly over whenever she has time, and I was assuming I'd get an invite because birthdays, in my mind, are a time you always spend with your significant other. Am I being too insecure and was I an asshole for getting upset? Should I let it go and be content with seeing her a week after? If I was in her shoes I would want her to fly to see me or I would want to fly to her and I suppose I feel that this is a red flag that she wants to spend time with her friends and really did not think about or address my feelings. 

Thanks. 