Relationships

I'm 17 and me and my boyfriend have been together for almost 5 months. I really love the kid. He's my first boyfriend and everything and I'm his. We are both virgins and everything. I just wanted to know your guys thoughts about relationships in your teens lasting forever. Everything is good with us but I'm just feeling very curious. I'm the type that overthinks and keeps ahead. I just wanted to know what my chances are with being with him for the rest of my life. I know I'm only 17 but I'm in love with the kid and want to be with him for a long time. Also with us being eachothers first real relationship yanno. 😕