First Time!

Hiii this is my first time posting so I wanted to as a question and kinda tell about myself. So this is my fiancé. we. He is joining the Marines! He fnally got a date for him to ship of. I'm so excited for him and this new step in his life!! Well I come from a military family so I know hard it is from the family/child's perspective but I've never had to be the future wife or gf or whatever you wanna call me. We have been together for 4 years and we are bestfriends. I have no clue how I'm going to be when he leaves I get so excited then his ship day would change and then it would be up in the air and we would not know when he would be leaving and I'd be a mess not knowing. Well now we know and Im freaking out but also very happy. He is leaving the day after my 20th birthday!!!! Best present ever!!!

Well if anyone has any tips/help for me to prepare myself for this new chapter in my life I'd appreciate it greatly! thanks 🌸