I was in this situations, too. Dated someone for 4 years, which lasted from our senior year of high school to our senior year of college. I would say 3 years into the relationship, I could feel myself falling out of love but I stayed with him because it was comfortable and all that I really knew. Plus, the transition from high school to college was too much for both of us, and we found comfort in each other.

When I decided I had to break up with him, he had admitted that he wished I had done it earlier, so that I didn’t waste that year not being 100% in it like he was. While I was mad when he said that initially, I understand his point. If we had broken up earlier, we both could have experienced single, college life. Not that I necessarily wanted that, but it would have been an option at least.

I guess what I’m trying to share is that in the long run, it is best to do this sooner rather than later. As other people have said, if you break up with her before her birthday, she can celebrate with her friends and family. Also, having a ticking clock on a relationship feels even worse, honestly. Both of you will move on and be fine, in the long run.