He acts into me in person but ignores my texts. What's going on?

In-person attraction is easy. He gets a dopamine hit from your presence, your laugh, your attention on him right now. That's real. But presence is not the same as desire to maintain connection. Text requires him to think about you when you're not there. It requires him to initiate or reciprocate without the social lubrication of being face-to-face. Some people don't text much. But most people text the people who matter to them, even if they're bad at it overall. The pattern you're seeing is selective effort. He texts when he feels like it, or when you've set up the next hangout already. He's not building momentum with you between meetups.

Your reply should be short, specific, and tied to a concrete next step. Don't ask him how he's been or what he's up to. Don't leave it open. Instead, reference something from your last time together, propose a specific plan, and give him a small reason to reply. The move is to make a reply so easy and low-stakes that his silence becomes a choice, not an accident. If he still doesn't respond, you have your answer. He was fine with you as an in-person option but isn't willing to show up in the space between hangouts. That's not someone building a relationship with you.

Send your text in daylight, on a weekday. Wait three to four days max. If he doesn't reply, you know he doesn't want to text with you. You can let it sit. If he reaches out later to hang, you can go. But do not send a follow-up text asking why he didn't reply. Do not check in again. If he goes silent after you reach out a second time, stop. He's not bad at texting. He's bad at showing up for you outside of the moment. Three months from now, you'll realize you've hung out with him five times and he's never initiated a plan via text. That's not a relationship building. That's him keeping you as an option.