Wanderer doesnt seem like the kind of guy to beg someone to be his lover, so he has to be serious. You knew eachother for years, and you were the closest person to him. He took the risk of deleting himself from other peoples memories to bring back all the people he killed, but they're all still dead, and now nobody remembers him. He god his memories back, and made a few friends, but all he wants is you. He needs you. He definitely deleted himself, its true, but he regrets it