Just need some advice ☹

Hey girls. So please don't judge because I'm feeling really down right now. I just don't know what to do. I met this guy about 2 and a half months back and we're in a long distance relationship. He's 17 and I'm 14 but very mature for my age (I know, a lot of girls probably say that) And I already know that my mum won't approve of the age gap. But the thing is, we went through some stuff almost 2 weeks ago and it just hasn't been the same since. Every time we talk over text he will just randomly stop talking to me and I don't know why. But I don't want to seem naggy so I don't ask why. But I'm getting tired of us not being able to ever see each other and I know that there's other guys around me who I could give time to. I just feel like I'm trying for something that'll never happen and I don't know if I want to do that anymore. But I also don't want to lose him. So I really need some advice. Any advice. Please.