Being in love?

So my bf and I have been dating for 4ish months now and he is just something else and we tell each other I love you, but I’m a way where it’s like telling a family member or a friend I love you. It’s crazy how much I care about this guy and we have discussed our future and we agree with a lot of things. I can 100% see him as a future husband because of the way he cares about me. I have never been in love before so idk how that feels but I would do anything or him, even give him the inside of my cinnamon bun. I’m just wondering how you would describe what being in love with someone feels like??? When do you know? I’m just wondering!!!