My ex texted me when he was engaged (20 days before his wedding) begging me to meet with him. He said he loved & missed me, but I refused & told him that I didn't love him anymore but that I wished him all best. He married his fiancé, & 6 months later he texted me telling me congrats on my new job, that it made him happy to hear about it, & that I deserved the best. He also mentioned that he had been "going through some stuff." I didn't ask about or address that comment; my replies are polite but very short. He texted me this week telling me that he had seen me out driving & that he saw that my hair was dark again. He said, "I liked it..." I guess my question is why is he doing this? I would never have an affair, & I do not have feelings for him, but should I be worried about these texts? How should I respond if he does it again?