There could be several reasons why your ex-boyfriend is still talking to you after a year:
Friendship: Sometimes, after a romantic relationship ends, people may transition into a friendship. If both of you still value each other's company and have shared interests, it's possible that your ex-boyfriend wants to maintain a platonic relationship with you.
Nostalgia and Comfort: Your ex-boyfriend might find comfort in talking to you because of the shared history and memories you have together. Nostalgia can make it challenging to let go completely.
Unresolved Feelings: It's possible that your ex-boyfriend still has unresolved feelings for you. He may want to keep in touch in the hope that something might reignite between you two.
Guilt or Regret: If the breakup was difficult or if he feels guilty about something that happened during the relationship, he may want to maintain contact to alleviate those feelings.
Concern for You: He may genuinely care about your well-being and want to check in on you from time to time.
Social Circle: If you share the same social circle or have mutual friends, it's natural for some level of communication to continue, especially if you both want to maintain connections with those friends.
Lack of Closure: Your ex-boyfriend might be finding it hard to move on because he didn't get the closure he needed after the breakup. Talking to you might provide some form of closure or understanding.
It's important to evaluate your own feelings and boundaries in this situation. If you are comfortable with maintaining contact and being friends, then that's perfectly fine. However, if it is causing you distress or hindering your ability to move on, it may be necessary to set clear boundaries or reduce communication with him. Remember that you have the right to prioritize your well-being and emotional health. If you find that talking to him is not helping you move forward, it may be best to communicate your feelings or consider limiting contact for your own sake.