I need a second opinion… AIO??

Hello, I started talking to someone new in April but for context I’m 24F and he’s 29M with a 9F who he sees every week. We’re in this weird stage where we seem to fight a lot but then when we make up we get stronger. There’s a couple 🚩, that everyone notices even myself but I tend to turn some of the flags yellow… on to my current situation with him. He has this girl best friend 27F who lives with him because her family situation isn’t good. They’ve been friends for 16 years and so he cares about her deeply which is obvious. I’ve had that gut feeling that she’s purposely trying to sabotage the relationship him and I have but when I bring up the concern to him he gets all defensive and defends her whole heartedly which irritates me. I can’t ever bring up how I feel or how something makes me feel without him spinning in and making me out to be the problem. We got into a disagreement today which is unfortunately still going on, where I was over thinking and asked him “hypothetically if you and I were dating and I told you your girl best friend made me uncomfortable or that I wouldn’t want you to talk to her every single day 24/7 (honestly he talks to her more than he talks to me) what would you say?” And he got all defensive how he’s “never going to stop being her friend and never going to stop talking to her and we’re grown so it’s stupid of me to even say that” but that’s not what I meant ofc. But it rubs me the wrong way cause if the rolls were reversed and my potential partner expressed his concerns with me and one of my guy friends I would easily communicate that with my guy friend about it. I’ve had a mutual understanding with all my guy friends that if any of us would get into a relationship we’d step back but still be supportive and friends when need be but the guy I’m currently talking to won’t even do that for me. AIO??

Also, my bday was on Labor Day and his was on Tuesday. I give him a gift and we even saw eachother the day after my bday and 2 days before his where I gave him his gift yet he didn’t get me anything. Nothing! Not even a card yet he was bragging to me Sunday how he got his girl best friend this $300 camera bag and new camera lense for $200 (yes he mentioned the price) now he thinks I’m starting things and crazy because I brought up how it made me feel… thoughts?