about your boyfriend, if he truly cares for you then he will understand, if hes not the one then there is someone else out there waiting for you, who will understand, but like i said if he truly cares then he wont mind and he will help you thought it.
your body is your body and no one can control the way it looks (unless you get surgery WITCH IS A BAD IDEA) and you mum is your mum it is completely normal to feel awkward about talking to her about this kind of stuff but she was once your age and probably went thought the same stuff as you with her mum. don't feel scared to talk to her about it she will most deferentially have an answer to it and if you really don't want to talk to her you can talk to you doctor but i suggest you talk to you mum first.
It's completely normal. Don't feel nervous to talk to your m about your body. Remember that she was also once your age and most likely had body issues. Hope that helped(: And I'm positive that by the time your body is done developing, they will be the same size. Haha(:
if you guys both really love each other then i don't see a problem 5 years seems like a big difference now but when you're older its nothing If he makes you happy then be with him :D
I will never understand why a guy that age takes a girl who's still in her pubirty. But anyways... If he loves you and you love him, than it's worth all the risks, right?