Am I right in thinking he’s acting a little jealous and pushing boundaries here?

Bearing in mind I am F, he is M, we aren’t dating and haven’t done anything that suggests we are. We have been in the same friend group for a while.

Here’s the things I’m questioning

I was at a bar and a random guy started chatting me up. The man in question kept looking over during the interactions, then when I returned back to him and our other friends he asked me what he was talking to me about. I made a joke about one of his comments being a red flag and he asked why, then what my preference is.

At another party, another random started chatting with me. Again, the guy in question interrupted us and joined in the conversation. The random guy left.

If anyone criticises me he will stick up for me or he always agrees with me. He told me he understands me perfectly when a guy made fun of my accent. Then when I was complaining about how i couldn’t be with someone who set multiples alarms in the morning and he said he doesn’t so I wouldn’t have to worry.

Why does he act like this? Do I speak with him?