Is it me ?

Okay so I’ve been with my significant other for about 6 months. Yesterday I went to see my best friend as I haven’t seen her in over a month. On the way their I call my boyfriend to see how ok he was. I told him I was going to see my best friend and he said to me let me know when you have lesbian action to join. I’m like huh he’s like since your always with her which he knows is not true. Than I responded well if you wanna be intimate with her call her yourself. He said I’ll talk to you later and hung up. I wrote to him about something not that topic and he saw the message and hasn’t responded. He ignored my ft and posted ok fb I feel ignored Any advice ? He doesn’t ever act like this or towards her ?