relationships and friends

So when I first started going out with my bf he didn't have any friends and I had several. Slowly but surely I ended up not talking or hanging out with them and now they don't really talk to me. I thought it was ok cuz I put my bf first. Now, my bf has made two good buddies and I notice he likes talking to them a lot. Like he's always mentioning them and sending them funny photos and it just feels like he'd rather thank to them than me.im lonely now and I hate that he wants to go out with his friends and I have no one cause I dropped my friends(some of which he encouraged me to) . Idk what to do. I feel neglected and if we fight he doesn't really try as hard as before to make things up cuz now he has buddies to pass the time with until I'm no longer upset. Idk what to do. I hate feeling this way and I've talked to him about it but he just doesn't get it. It's like I gave up everything for him and as soon as he found himself some buddies he just put me in the back seat. Advice?