When a guy calls you baby, it can be hard to know how to respond. If you're not sure if he's just being friendly or if he's interested in you, it's important to pay attention to the context of the situation. If you're at a party and he's talking to a group of people, it's likely that he's just being friendly. However, if you're alone together and he's looking into your eyes while he calls you baby, it's likely that he's interested in you.
If you're interested in him, you can respond by calling him baby back or by flirting with him. If you're not interested in him, you can respond by politely thanking him for the compliment or by changing the subject. Whatever you do, make sure you stay calm and confident. Guys are attracted to confident women, so acting like you don't care will only make him more interested in you.