A boy's signboard screen name is always changed for you, which may indicate that he has some special feelings for you, but he is not sure whether he really loves you. Because everyone expresses their love in different ways, some people may express their feelings in this way, while others will not.

If you want to make sure whether this boy really loves you, I suggest you communicate with him, understand his thoughts and feelings, and see if he meets your expectations for your lover. At the same time, you need to notice that your feelings and intuition are also important. If you think this boy doesn't really love you, then you should trust your feelings and seek more evidence and communication to prove your thoughts.