Would you be mad?

So I was on my boyfriends phone while he was driving, giving directions. He told me to go to his messages and go to my sisters contact. When I open his messages there was a message from a girl saying hey this is _____. I instantly asked him in a nice voice who is ____? He said a special needs girl that likes me. I work with her. I said how did she get your number and he said he gave it to her. I don’t believe it’s a special needs girl because I know most of the special needs people at his work and I don’t know of her. I mean he could be telling the truth but I just have a feeling.

Anyways I kind of got irritated and said why are you giving her your number. He said that she asked for it. I said it’s disrespectful to me. It would be different if she didn’t like him and she wanted to be his friend.

I said how would you feel if I gave guys my number? And he said that he doesn’t care and “all the power to me”

Am I in the wrong for being mad?