Search Results: making girls jealous

My boyfriend was on the phone for around 3hours and he told me that there is a girl he was talking too and she was teaching him how to cook. He said he was also talking on the phone with one of his professor via video call. Yesterday, we were talking on the phone for an hour or so, then he told me he would call me back. I call him and he was on the phone. He was on the phone for around 2-3hours and told me someone was teaching him how to cook. Then he said he was talking to many people at the same time. But why didn’t he cut the person he was talking too and take my call and ask me to wait. The thing is my boyfriend likes joking and making me jealous, so I don’t understand whether I should trust him or not. I’m very confused. My family asked me not to respond his text message or phone call so fast, to wait at least for hours before getting back to him.