The sequence usually runs: appealing stimulus, quick internal excitement, action or proposal, partner hesitation, brief deflation, withdrawal of energy. None of those steps is pathological. The issue is that the deflation can register to a partner as disappointment in them rather than disappointment about the plan. Repair works best when it separates those two things out loud. Saying 'I'm not frustrated with you, I just needed a moment to reset' gives your partner accurate information. Following through by actually returning to the topic, rather than dropping it to keep the peace, is what makes the repair credible. Consistency between what you say and what you do is the signal your partner is reading.