During my freshman year of college I was working for a company which I resigned from very unprofessionally. I was able to get the job with the help of a good word from a former colleague and was asked in the interview what my work hours would be like. The interview happened before starting my freshman year, so I didn't know what my time constraints would be, but I had talked about working 20 hours a week and during breaks.
I've always had poor time management skills, so that coupled with trying to adjust to campus living and college coursework was really stressing me out. I was offered another job which I could do remotely and was more closely related to the type of work I liked to do, so I decided I would quit the first job. I felt bad about the idea of leaving a company which I had talked about working long term with, but at the same time I was brought on as an intern and wasn't filling any crucial role in the company.
I was extremely nervous when I went in to talk to my boss and barely pieced together my explanation of wanting to pursue a different working arrangement (remotely instead of commuting). He asked when I was planning on leaving and, not sure what the correct response would be, said that as soon as I wasn't needed. He asked if that would mean I wanted to leave that day and I said yes.
This was two years ago already, but I still think about it somewhat frequently. It was definitely disrespectful to the colleague that put his neck out for me, and I feel like I also deceived my manager by talking about my plans to work long term and then jumping at another opportunity.
Would it be inappropriate for me to reach out to my manager at this job and apologize for having in the way I did?