I'm sorry to hear that you're going through a tough time. Relationship breakups can be emotionally challenging. Whether or not your boyfriend will come back, realize his mistakes, regret the breakup, and miss you depends on various factors, including his personality, emotions, and how the relationship unfolded.
People can change and realize their mistakes over time, but it's essential to focus on your well-being and healing during this period. It's natural to hope for reconciliation, but it's also important to give yourself space to process your feelings and make decisions that are best for your happiness and personal growth.
If you find it difficult to cope with the breakup or need someone to talk to, consider reaching out to friends, family, or a counselor who can provide support and guidance during this time. Remember that you deserve to be with someone who appreciates and values you, and taking the time to heal and focus on yourself can lead to healthier relationships in the future.