Relationship advice

So I started talking to this guy and he’s super sweet. My best friends aren’t too fond of him and I’m not sure why. We had a talk about it and it seemed like we had everything worked out but it still feels like they have some hard feelings for him. We’re freshman and he’s a sophomore and they say he will pressure me into things because he’s an upperclassman. We’re the same age, 15. Is it bad to want my boyfriend to have a good relationship with my friends? I don’t know if I should keep talking to him or give up. I do really like him. Is it selfish to want to talk to him over what my BEST friends think?