I NEED ADVICE!!!!!

i met my boyfriend online in 2019 and he lives an hour and a half away. i am currently 15 and 1/2 and he his 17 1/2 so he drives to see me once a week. when we are hanging out together everything is perfect and we are always having fun. but i feel like recently he hasn’t been giving me the attention he used to. he is always hanging out with his other friend and it feels like the only time i get to actually talk to him is when he’s at my house and even then he is texting his friend constantly. theres nothing wrong with him having a best friend but this was not what i signed up for when we started dating over a year ago. what do i do?