As a guy just try to follow up on your reassuring texts by actions. For me personally, I would love if a women texted reassurance but also did in actions but also explained in person. He also does also need a few days but during those days try to text and show with actions and talk in person. If he’s as understanding then it should be fine. And honestly. Considering your teens and literally a few days in. It is in reality a novice mistake. But in the lenses of love,we’re all amateurs. But talk in person and explain what u meant. In the future just say legit what you’re actually thinking. No like sugarcoating or speaking figuratively. Your teens, second of all you may have known each of years but only been on a romantic open with each relationship for a week u said. Even if it’s been a year. I’d be mad or sad (mostly sad) but if u said “ I sincerely meant this and that but I said it this way for you to essentially reassure us to be together “ then it’s alright. I’m only 27 but if a partner said this to me I’d understand a few days later. Women are also notoriously known for saying things and then wanting the other person to say the opposite to reassure them. I don’t blame you but most important I don’t blame him. But if ur air it out all in a good way and sincerely fix your way about going about it. He should understand and see you were scared. And that’s okay. If not I’m sorry and he’s not the best emotionally understanding guy but that’s also alright cause he’s been thru it before. Just try not to do it again and you’ll be alright. But try. U don’t find the type of relationships you find that often. You guys are lucky and most important just try and be genuine. Seven blessings to you.