Thinking about joining...?

How did y’all know that you wanted to join the military. And how could you pick which branch you wanted? I’m just asking but I just have this feeling that maybe I should join. Ever since my sophomore year and a navy recruiter came to talk to my law enforcement class I got this feeling like I should join. I started getting serious about but when I talked to my parents they talked me out of it. Now I’m about to start my senior year and my boyfriend just left for basic training and I can’t stop thinking about the military. All those feelings I had back then about joining is coming back like it’s this gut feeling. I keep watching YouTube videos on everything military from basic training- challenges. I mean idk is this how y’all felt when y’all joined? Do you thinking maybe something is telling me to join? And will this ruin my relationship?