I (22M) think I fucked up and got into a new relationship too early with someone new (21F).

I had a relationship with a girl for two years. Due to incompatibilities between us she ended up dumping me in August 2024, which left me devastated. I decided to mantain strict NC and focus on rebuilding my life. As the months went by, I started to feel feel better. I truly felt like I was ready to move on.

I met this girl in September 2024. At the beginning I did not pay much attention to her because I was still shattered by the break up. However, as my mood improved I started to have a crush on her. I decided that life was too short to not take the chance and asked her out by December. We started dating and a relationship in January 2025.

At the beginning everything was fine. She’s intelligent, kind and we always have a great time together. I felt like I was happy again. However, as the weeks went by things changed. First, we simply don’t have enough time for each other. We both have very busy schedules, and we only meet briefly a few times a week.

But the thing that worries me the most is that for the last weeks I have been having strong waves of sadness and despair over the breakup last year. I still find myself grieving. I’ve realised I still love and miss my ex, and that I’ve fucked up with my new girlfriend. This situation is not fair to her. I’ve acted selfishly, albeit without being conscious about it at the time. I didn’t want to admit to myself I had met the right person at the wrong time.

I’m now considering breaking up before the problem gets bigger. I’ve never talked about my ex to my new girlfriend, and I do not want to blindside her. I need advice; I don’t want to make things worse.

Thanks.

TL;DR: I got into a new relationship 4 months after a breakup. At the beginning I thought I was ready to move on, but now I realise that I’m still not over my ex. I’m strongly considering breaking up because my new girlfriend doesn’t deserve this, but don’t know how.