Wanting someone is healthy. Needing them just to feel whole is a warning light on the dash.

Choosing somebody and running on them are not the same thing. Choosing means you had a life, you liked theirs, and now the two overlap. Running on them means the lights go out whenever they are unavailable, and every unanswered message turns into a question about whether you are okay.

Check what still stands when they are busy. The friend you text about nothing, the thing you do on Thursdays, the plan that was yours before they showed up. Keep those going, not as a backup in case it ends, but because they were yours first.