Recently broke it off with my LTR of 3 years because I couldn't see a future with her. I've broken up with my share of girls in the past and walked away feeling perfectly fine but this is the first time I broke up with someone I still liked spending time with. Post-breakup, I naturally feel the withdrawals of not having someone who's been around with me for the last 3 years. I know it'll go away with time and I'm focusing on lifting, reading and learning. What I didn't anticipate is the second-hand sadness and guilt. Because I don't feel anything toxic towards her, I feel guilty of letting her down and am struggling to put myself first. How do I move past this setback?