I know they're teens, so I get that you need to give them some leeway, but every time I see a scene like this in a romance story, it pisses me off. It makes it feel like he's not taking the relationship seriously. If you're having troubles, it's completely natural - even almost mandatory - to let your partner know. If you want the relationship to last, you need to share both the good and the bad because you’re a team. Not sharing your struggles can make the other person feel distrusted and unreliable. Nothing good can come from hiding things if you’re thinking about the long-term viability of the relationship.
Even if you plan to take care of it yourself - tell them, make it clear what is happening, and keep them posted so they don't have to worry due to uncertainty.