When someone says that talking to you makes them happy, it generally means that they enjoy your company and find the interactions with you to be positive and uplifting. It's a positive and flattering statement that suggests they appreciate the time spent talking with you and that the conversations bring joy or a sense of happiness to their life.
However, it's important not to read too much into a single statement. People express their feelings and emotions in different ways, and what they say may not always reflect a deeper romantic interest or any specific intention beyond friendship or general fondness.
If you have feelings for this person and want to explore the possibility of a closer relationship, it's best to communicate openly and honestly. Express your feelings and see how they respond. Keep in mind that they might not share the same feelings, and that's okay too. Healthy communication is key to understanding each other's perspectives and building strong connections, whether as friends or potentially something more.
Ultimately, whether it means anything beyond friendship or not, it's always nice to know that someone enjoys talking to you and finds happiness in your company. Positive interactions and healthy relationships are valuable in themselves, regardless of the outcome.