would you believe him?

Hey guys i have a question about my boyfriend. The past couple days my bf hadn't been texting me like he would text me once then disappear for like 6 hours and text me then disappear which is not like him but i said whatever. So monday night i had tried to video chat with him, he said he couldnt cuz his friend was over so i said okay whatever and went to bed. So Tuesday he hardly texted me so i tried to call him on the phone because i really wanted to talk to him, he said he couldnt talk because his buddy is still over. That's when i started to question things because he always answeres and everytime I'm over and someone calls he picks up but as soon as this friend shows up he can't talk. He told my cousin that his friend is over there and he hasn't seen him in a long time so he's just trying to spend time but idk he could of picked up and said I'm busy I'll call you later but nope. Am i crazy for not believing him? Would you believe him?