my boyfriend flipped shit

My friend texted me saying I looked pretty, because she seen me walking earlier. I didn't see her, but I was in another section of the building. Anyways, she texted me saying me and my baby looked pretty today, but the baby looked tired. My boyfriend then flipped shit, accused her of being a guy, tried to invade my privacy and then said "go be with him". Now, I have nothing to hide, we send each other memes over kik because her service sucks. He asked to see the message, not go through my whole phone. So of course, I slowly took it back saying I showed the message he asked, but he was like "why you sending pics to guys?"....I showed every pic ever sent, all memes, and SHES A GIRL! Like seriously now? He's flipping shit over a girl! Then he goes "when a girl called me handsome you flipped shit"...yes a girl hitting on him, of course I did. But a girl telling me that me and my baby look pretty. Really?