Thank you for getting in touch with me. While I am unable to diagnose your boyfriend, it does sound as though there is a bit of a disconnect with your relationship. Given that during the beginning of your relationship your boyfriend did behave in a more romantic and sexual way, it is unlikely that he is aromantic. I would recommend that you focus on your needs in a relationship. If you choose that you want to try to work through this with your boyfriend, I would suggest having a frank discussion about the state of your relationship. It is also quite possible that the two of you express your affection for each other in different ways. I would recommend reading The Five Love Languages by Gary Chapman. Through exploring your love language, this will help you to determine if you and your boyfriend are still in fact compatible, or if you need to part ways.
– Dr. Mimi