Boyfriend: I need help and advice

So I am in my first relationship and I have had my first kiss and all but my bf hangs out with his friends more than he does me and when I text him he doesn’t respond for hours on end and it worries me. I mean am I needy or stupid or something? We have already said I love u and we picked out our kids names and everything so it’s pretty serious. When we FaceTime when he is with his friends and we are about to hang up he doesn’t say I love u too when I say i love u. Sometimes I sarcastically text him I love u too and still don’t get a response. When we FaceTime when he’s around his fam he says I love u and it makes me happy but like I don’t know what to do in this situation. Please ladies help me and give me advice.