marriage!?

So this is totally insane but I have a question for you girls and I could be wrong but I just need advice!!! 
So me and my beautiful boyfriend are heading to the tip of a Australia at the end of this year for our one year anniversary 😊 now we are young lovers but I have the strange feeling he is going to propose we talk about getting married all the time but I'm not really into marriage but he definitely is! I just find it really strange he wants to go one this huge road trip for our one year like could be just be doing this for a great adventure or is there something to it? Help ?!?!