SOs annoying BFF

I love my boyfriend so much. But as always there just HAS to be that bromance with his bestie. I feel like he's taking my place! He's always posting to my boyfriends Facebook saying we need a bro day! He offered him and only him to go live with him. He's offered to give him rides places and whenever me and my boyfriend argue he always goes to him. I feel like I've been replaced by him. Hey elks me how he's such a great friend because he's always been there but if that were the case then why has he all a sudden started talking to my boyfriend 2 months ago an we've been together 6??? I'm sorry I just need to vent this whole bromance thing is making me crazy!