Why does my boyfriend always ignore me?

OK I want to know why does my boyfriend always ignore me when I'm talking to him? I always tell him it bother me and he say but I do pay attention to you your just being over dramatic so I tell him really OK then explain to me what I have just said he say I heard you I don't need to repeat what you have said so I'm like whatever it totally bother me and oh yea why don't guys like talking lots with girls but when guys are around lot of guys omg they never stop talking it p*sses me off! So please let me know