I'm uncertain whether ending my relationship with my boyfriend will turn out to be a mistake I'll regret forever.

I really appreciate Reddit for its advice, but I'm seeking guidance on a specific issue. Here's my situation: I'm a 23-year-old woman in a relationship with my boyfriend, who is 29, and we've been together for just over three years in the UK. I love him deeply, but we seem to want different things in life. I've always dreamed of traveling and am nearly certain I do not want children, while he aspires for a stable relationship with a mortgage and kids. We've almost ended things multiple times due to this disparity, but I recently suggested I could compromise on travel. As someone with auDHD, I find it hard to meet new people and be away from my family, so I think I would prefer vacations over long-term travel. I want to experience new cultures, but it’s not about the typical "traveling experience.” I also lack the desire to raise children and want to focus on living my life for myself. If I ever decide to have kids, I feel it would be when I’m in my 30s, when I might be ready and have accomplished the things I want. My boyfriend, who struggles with his relationship with his father, seems to want to be the father figure he never had. When we first met, he mentioned he felt if he wanted kids, he would have had them by now. I interpreted that as a no, but since then, our differing views on this have become more pronounced. We came to a compromise where I told him I wouldn’t try for a baby, but if I accidentally got pregnant, I’d go along with it. Recently, he got a puppy, and I’ve been having a hard time adjusting to this change in our relationship dynamics. He works night shifts and we don’t live together due to rental issues, so I only see him two nights a week. When we do spend time together, he’s often exhausted from caring for the puppy. I’ve felt frustrated because our relationship used to be spontaneous and fun, but now it feels stagnant. I worry about whether this is what our future holds. I might have been too harsh when I said I wasn’t willing to settle for this change, especially after I had already compromised on travel and kids. I think he believes breaking up might be best for me, as he feels like he’s holding me back. However, I struggle with PMDD, which impacts my emotions, and I often express my feelings out of anger and frustration. I’m confused about my feelings; I know I love him and we both believe we’re meant to be together. He even suggested I do what I need to do and enjoy life, hoping we might reconnect in the future, but I’m scared to take that risk. If we broke up and he started a family, I would be devastated. I feel uncertain about what I want in life, and though people tell me there’s no rush, I feel the pressure of our age difference. I don’t want him to wait indefinitely as I figure things out, but I also don’t want to lose him. My desires constantly shift, but one constant has been my love for him. It’s heartbreaking to think I might lose the love of my life over these differences. He has said he could make peace with the idea of not having kids, but I don’t want him to regret that decision and resent me later. I would love to hear from others who have experienced similar issues in relationships—how did you reconcile different desires, and did you end up feeling satisfied or regretted your choices? Or any general advice on whether there’s a possibility for us to make this work? We share a simple lifestyle and enjoy our time together, but it’s just about the kids and my uncertainty about my future that provides these challenges. I’m feeling really lost because of how deeply we love each other, and the thought of possibly losing him over these differences is so painful. Thanks for listening.