He's frustrated you wanted to slow down? How to respond

Frustration after someone asks to slow down often shows up as short replies, a sudden drop in effort, a joke that lands a bit sharp, or a comment about how you're overthinking things. Look at what changed. If he was texting a lot and now he's terse, he's probably disappointed about losing momentum he enjoyed. If he's pushing to see you sooner, he may be trying to prove the pace wasn't a problem. Neither tells you whether he's a good match. It tells you he wanted something different from you and is adjusting to a no or a not-yet.

Pay attention to whether his frustration includes curiosity about your reasons or dismissal of them. Someone who asks what you're hoping for, even while annoyed, is still engaging with you. Someone who calls the request silly or keeps reframing it as an overreaction is telling you how he handles your limits. That's the part worth learning from.

Your reply should confirm the pace you want in one or two plain sentences, then stop. Something like naming that you know this isn't what he was expecting, that you still want to slow things down, and that you're happy to keep talking. The point is to show that the request stands even while he's unhappy with it. You don't have to agree that his frustration is fair, and you don't have to prove the slowdown is reasonable. A boundary doesn't need a case built around it.

Avoid turning the message into a discussion of what went wrong earlier. If he's bringing up something you said or did, you can briefly acknowledge it if it was a real misstep, but don't reopen the whole timeline. The more you explain, the more the conversation becomes about your justification instead of what you both want from here.

Send your reply when you're not irritated yourself, ideally in the same part of the day you'd normally text. Replying in the middle of an argument or at 2am tends to produce a message you'd rather not have sent. After you've replied, leave it alone for at least a day unless he asks something that needs an answer. If he responds warmly, let the pace settle and see whether he keeps to what you described. If he goes quiet for several days or keeps circling back to the same complaint, that's your answer. You don't need to send a follow-up asking whether he's still interested. One clear message and one period of silence is enough to see what he does with it. If the next conversation is again about your pace rather than the two of you, step back.